diff --git a/.gitignore b/.gitignore
index d548f66de0..da4ffd7830 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 .jq-template.awk
+.yq*
diff --git a/3.3-rc/alpine3.18/Dockerfile b/3.3-rc/alpine3.18/Dockerfile
index 12730d35c3..6e65161149 100644
--- a/3.3-rc/alpine3.18/Dockerfile
+++ b/3.3-rc/alpine3.18/Dockerfile
@@ -26,8 +26,10 @@ RUN set -eux; \
 	} >> /usr/local/etc/gemrc
 
 ENV LANG C.UTF-8
-ENV RUBY_MAJOR 3.3-rc
+
+# https://www.ruby-lang.org/en/news/2023/12/11/ruby-3-3-0-rc1-released/
 ENV RUBY_VERSION 3.3.0-rc1
+ENV RUBY_DOWNLOAD_URL https://cache.ruby-lang.org/pub/ruby/3.3/ruby-3.3.0-rc1.tar.xz
 ENV RUBY_DOWNLOAD_SHA256 051815637f1fa75a1edf2c54b66d5d5b69563daad777da8dc39543b7754b5290
 
 # some of ruby's build scripts are written in ruby
@@ -86,7 +88,7 @@ RUN set -eux; \
 		cargo --version; \
 	fi; \
 	\
-	wget -O ruby.tar.xz "https://cache.ruby-lang.org/pub/ruby/${RUBY_MAJOR%-rc}/ruby-$RUBY_VERSION.tar.xz"; \
+	wget -O ruby.tar.xz "$RUBY_DOWNLOAD_URL"; \
 	echo "$RUBY_DOWNLOAD_SHA256 *ruby.tar.xz" | sha256sum --check --strict; \
 	\
 	mkdir -p /usr/src/ruby; \
diff --git a/3.3-rc/alpine3.19/Dockerfile b/3.3-rc/alpine3.19/Dockerfile
index 05358035e7..13557e7995 100644
--- a/3.3-rc/alpine3.19/Dockerfile
+++ b/3.3-rc/alpine3.19/Dockerfile
@@ -26,8 +26,10 @@ RUN set -eux; \
 	} >> /usr/local/etc/gemrc
 
 ENV LANG C.UTF-8
-ENV RUBY_MAJOR 3.3-rc
+
+# https://www.ruby-lang.org/en/news/2023/12/11/ruby-3-3-0-rc1-released/
 ENV RUBY_VERSION 3.3.0-rc1
+ENV RUBY_DOWNLOAD_URL https://cache.ruby-lang.org/pub/ruby/3.3/ruby-3.3.0-rc1.tar.xz
 ENV RUBY_DOWNLOAD_SHA256 051815637f1fa75a1edf2c54b66d5d5b69563daad777da8dc39543b7754b5290
 
 # some of ruby's build scripts are written in ruby
@@ -86,7 +88,7 @@ RUN set -eux; \
 		cargo --version; \
 	fi; \
 	\
-	wget -O ruby.tar.xz "https://cache.ruby-lang.org/pub/ruby/${RUBY_MAJOR%-rc}/ruby-$RUBY_VERSION.tar.xz"; \
+	wget -O ruby.tar.xz "$RUBY_DOWNLOAD_URL"; \
 	echo "$RUBY_DOWNLOAD_SHA256 *ruby.tar.xz" | sha256sum --check --strict; \
 	\
 	mkdir -p /usr/src/ruby; \
diff --git a/3.3-rc/bookworm/Dockerfile b/3.3-rc/bookworm/Dockerfile
index 7993f281a6..12727ffe31 100644
--- a/3.3-rc/bookworm/Dockerfile
+++ b/3.3-rc/bookworm/Dockerfile
@@ -15,8 +15,10 @@ RUN set -eux; \
 	} >> /usr/local/etc/gemrc
 
 ENV LANG C.UTF-8
-ENV RUBY_MAJOR 3.3-rc
+
+# https://www.ruby-lang.org/en/news/2023/12/11/ruby-3-3-0-rc1-released/
 ENV RUBY_VERSION 3.3.0-rc1
+ENV RUBY_DOWNLOAD_URL https://cache.ruby-lang.org/pub/ruby/3.3/ruby-3.3.0-rc1.tar.xz
 ENV RUBY_DOWNLOAD_SHA256 051815637f1fa75a1edf2c54b66d5d5b69563daad777da8dc39543b7754b5290
 
 # some of ruby's build scripts are written in ruby
@@ -55,7 +57,7 @@ RUN set -eux; \
 		cargo --version; \
 	fi; \
 	\
-	wget -O ruby.tar.xz "https://cache.ruby-lang.org/pub/ruby/${RUBY_MAJOR%-rc}/ruby-$RUBY_VERSION.tar.xz"; \
+	wget -O ruby.tar.xz "$RUBY_DOWNLOAD_URL"; \
 	echo "$RUBY_DOWNLOAD_SHA256 *ruby.tar.xz" | sha256sum --check --strict; \
 	\
 	mkdir -p /usr/src/ruby; \
diff --git a/3.3-rc/bullseye/Dockerfile b/3.3-rc/bullseye/Dockerfile
index c73d4e0f46..dd3f4a6e21 100644
--- a/3.3-rc/bullseye/Dockerfile
+++ b/3.3-rc/bullseye/Dockerfile
@@ -15,8 +15,10 @@ RUN set -eux; \
 	} >> /usr/local/etc/gemrc
 
 ENV LANG C.UTF-8
-ENV RUBY_MAJOR 3.3-rc
+
+# https://www.ruby-lang.org/en/news/2023/12/11/ruby-3-3-0-rc1-released/
 ENV RUBY_VERSION 3.3.0-rc1
+ENV RUBY_DOWNLOAD_URL https://cache.ruby-lang.org/pub/ruby/3.3/ruby-3.3.0-rc1.tar.xz
 ENV RUBY_DOWNLOAD_SHA256 051815637f1fa75a1edf2c54b66d5d5b69563daad777da8dc39543b7754b5290
 
 # some of ruby's build scripts are written in ruby
@@ -55,7 +57,7 @@ RUN set -eux; \
 		cargo --version; \
 	fi; \
 	\
-	wget -O ruby.tar.xz "https://cache.ruby-lang.org/pub/ruby/${RUBY_MAJOR%-rc}/ruby-$RUBY_VERSION.tar.xz"; \
+	wget -O ruby.tar.xz "$RUBY_DOWNLOAD_URL"; \
 	echo "$RUBY_DOWNLOAD_SHA256 *ruby.tar.xz" | sha256sum --check --strict; \
 	\
 	mkdir -p /usr/src/ruby; \
diff --git a/3.3-rc/slim-bookworm/Dockerfile b/3.3-rc/slim-bookworm/Dockerfile
index 8c68665b83..17bb114152 100644
--- a/3.3-rc/slim-bookworm/Dockerfile
+++ b/3.3-rc/slim-bookworm/Dockerfile
@@ -29,8 +29,10 @@ RUN set -eux; \
 	} >> /usr/local/etc/gemrc
 
 ENV LANG C.UTF-8
-ENV RUBY_MAJOR 3.3-rc
+
+# https://www.ruby-lang.org/en/news/2023/12/11/ruby-3-3-0-rc1-released/
 ENV RUBY_VERSION 3.3.0-rc1
+ENV RUBY_DOWNLOAD_URL https://cache.ruby-lang.org/pub/ruby/3.3/ruby-3.3.0-rc1.tar.xz
 ENV RUBY_DOWNLOAD_SHA256 051815637f1fa75a1edf2c54b66d5d5b69563daad777da8dc39543b7754b5290
 
 # some of ruby's build scripts are written in ruby
@@ -81,7 +83,7 @@ RUN set -eux; \
 		cargo --version; \
 	fi; \
 	\
-	wget -O ruby.tar.xz "https://cache.ruby-lang.org/pub/ruby/${RUBY_MAJOR%-rc}/ruby-$RUBY_VERSION.tar.xz"; \
+	wget -O ruby.tar.xz "$RUBY_DOWNLOAD_URL"; \
 	echo "$RUBY_DOWNLOAD_SHA256 *ruby.tar.xz" | sha256sum --check --strict; \
 	\
 	mkdir -p /usr/src/ruby; \
diff --git a/3.3-rc/slim-bullseye/Dockerfile b/3.3-rc/slim-bullseye/Dockerfile
index 9bb0bf1124..e87831cdc7 100644
--- a/3.3-rc/slim-bullseye/Dockerfile
+++ b/3.3-rc/slim-bullseye/Dockerfile
@@ -29,8 +29,10 @@ RUN set -eux; \
 	} >> /usr/local/etc/gemrc
 
 ENV LANG C.UTF-8
-ENV RUBY_MAJOR 3.3-rc
+
+# https://www.ruby-lang.org/en/news/2023/12/11/ruby-3-3-0-rc1-released/
 ENV RUBY_VERSION 3.3.0-rc1
+ENV RUBY_DOWNLOAD_URL https://cache.ruby-lang.org/pub/ruby/3.3/ruby-3.3.0-rc1.tar.xz
 ENV RUBY_DOWNLOAD_SHA256 051815637f1fa75a1edf2c54b66d5d5b69563daad777da8dc39543b7754b5290
 
 # some of ruby's build scripts are written in ruby
@@ -81,7 +83,7 @@ RUN set -eux; \
 		cargo --version; \
 	fi; \
 	\
-	wget -O ruby.tar.xz "https://cache.ruby-lang.org/pub/ruby/${RUBY_MAJOR%-rc}/ruby-$RUBY_VERSION.tar.xz"; \
+	wget -O ruby.tar.xz "$RUBY_DOWNLOAD_URL"; \
 	echo "$RUBY_DOWNLOAD_SHA256 *ruby.tar.xz" | sha256sum --check --strict; \
 	\
 	mkdir -p /usr/src/ruby; \
diff --git a/Dockerfile.template b/Dockerfile.template
index c81cc16bdb..4cb9f1ea37 100644
--- a/Dockerfile.template
+++ b/Dockerfile.template
@@ -50,9 +50,17 @@ RUN set -eux; \
 	} >> /usr/local/etc/gemrc
 
 ENV LANG C.UTF-8
+{{ if .version | . == "3.0.6" or . == "3.1.4" or . == "3.2.2" then ( -}}
 ENV RUBY_MAJOR {{ env.version }}
 ENV RUBY_VERSION {{ .version }}
-ENV RUBY_DOWNLOAD_SHA256 {{ .sha256 }}
+ENV RUBY_DOWNLOAD_SHA256 {{ .sha256.xz }}
+{{ ) else ( -}}
+
+# https://www.ruby-lang.org/{{ .post | ltrimstr("/") }}
+ENV RUBY_VERSION {{ .version }}
+ENV RUBY_DOWNLOAD_URL {{ .url.xz }}
+ENV RUBY_DOWNLOAD_SHA256 {{ .sha256.xz }}
+{{ ) end -}}
 
 # some of ruby's build scripts are written in ruby
 #   we purge system ruby later to make sure our final image uses what we just built
@@ -189,7 +197,12 @@ RUN set -eux; \
 	fi; \
 {{ ) else "" end -}}
 	\
+{{ if .version | . == "3.0.6" or . == "3.1.4" or . == "3.2.2" then ( -}}
+{{ if .url.xz != "https://cache.ruby-lang.org/pub/ruby/\(env.version | rtrimstr("-rc"))/ruby-\(.version).tar.xz" then error("url for \(.version) is not as expected!") else "" end -}}
 	wget -O ruby.tar.xz "https://cache.ruby-lang.org/pub/ruby/${RUBY_MAJOR%-rc}/ruby-$RUBY_VERSION.tar.xz"; \
+{{ ) else ( -}}
+	wget -O ruby.tar.xz "$RUBY_DOWNLOAD_URL"; \
+{{ ) end -}}
 	echo "$RUBY_DOWNLOAD_SHA256 *ruby.tar.xz" | sha256sum --check --strict; \
 	\
 	mkdir -p /usr/src/ruby; \
diff --git a/apply-templates.sh b/apply-templates.sh
index 7f9da43e19..9ed389b588 100755
--- a/apply-templates.sh
+++ b/apply-templates.sh
@@ -32,6 +32,11 @@ for version; do
 
 	rm -rf "$version/"
 
+	if jq -e '.[env.version] | not' versions.json > /dev/null; then
+		echo "deleting $version ..."
+		continue
+	fi
+
 	variants="$(jq -r '.[env.version].variants | map(@sh) | join(" ")' versions.json)"
 	eval "variants=( $variants )"
 
diff --git a/versions.json b/versions.json
index 942667adaa..99ffa1b602 100644
--- a/versions.json
+++ b/versions.json
@@ -1,17 +1,70 @@
 {
   "3.0": {
-    "sha256": "b5cbee93e62d85cfb2a408c49fa30a74231ae8409c2b3858e5f5ea254d7ddbd1",
+    "version": "3.0.6",
+    "date": "2023-03-30",
+    "post": "/en/news/2023/03/30/ruby-3-0-6-released/",
+    "url": {
+      "gz": "https://cache.ruby-lang.org/pub/ruby/3.0/ruby-3.0.6.tar.gz",
+      "xz": "https://cache.ruby-lang.org/pub/ruby/3.0/ruby-3.0.6.tar.xz",
+      "zip": "https://cache.ruby-lang.org/pub/ruby/3.0/ruby-3.0.6.zip"
+    },
+    "size": {
+      "gz": 21315725,
+      "xz": 15864560,
+      "zip": 25694359
+    },
+    "sha1": {
+      "gz": "1052441f0abbb0302fb9f1481d2db99dfb4d4c29",
+      "xz": "7880c34d7193224e967163b12f33bf7aaf7304f6",
+      "zip": "e75d1bc14dd89c176145dc3968774e30f3a17652"
+    },
+    "sha256": {
+      "gz": "6e6cbd490030d7910c0ff20edefab4294dfcd1046f0f8f47f78b597987ac683e",
+      "xz": "b5cbee93e62d85cfb2a408c49fa30a74231ae8409c2b3858e5f5ea254d7ddbd1",
+      "zip": "428d518d12f09df4146fc31dbed47c8d7e10fcccd2426948e5c0862d9321480d"
+    },
+    "sha512": {
+      "gz": "d596bfd374ae777717379b409afe8ee1655ade0c0539ada7a10af4780b818efe25a28aa50a2a7226741d1776d744e10ad916641f9d12fb31c7444b0a01d0e0cc",
+      "xz": "abbf883cd9f3ddbd171df8f8c3cd35d930623c4c01a5e01387de0aee9811cca7604b82163e18e04f809773bf1ca5a450f13f62f3db14f191f610e116ae4fa6f8",
+      "zip": "576d11c668acac57cf4952228b148d17f16ab1dc491145355a4f2068b15f6cab8a4007a84d9d1eda4c1b62837675c82be99ebe6379c314f46c6ebbbf89677b5e"
+    },
     "variants": [
       "bullseye",
       "slim-bullseye",
       "buster",
       "slim-buster",
       "alpine3.16"
-    ],
-    "version": "3.0.6"
+    ]
   },
   "3.1": {
-    "sha256": "1b6d6010e76036c937b9671f4752f065aeca800a6c664f71f6c9a699453af94f",
+    "version": "3.1.4",
+    "date": "2023-03-30",
+    "post": "/en/news/2023/03/30/ruby-3-1-4-released/",
+    "url": {
+      "gz": "https://cache.ruby-lang.org/pub/ruby/3.1/ruby-3.1.4.tar.gz",
+      "xz": "https://cache.ruby-lang.org/pub/ruby/3.1/ruby-3.1.4.tar.xz",
+      "zip": "https://cache.ruby-lang.org/pub/ruby/3.1/ruby-3.1.4.zip"
+    },
+    "size": {
+      "gz": 20917933,
+      "xz": 15316604,
+      "zip": 25241255
+    },
+    "sha1": {
+      "gz": "38eddfc5a7536b6c8133183563009a4ed9bbe6db",
+      "xz": "2e2fbf43b7db6f24280548a3544912535bed8212",
+      "zip": "1061632623caa82a68a04a35777ed8f1797a9f8f"
+    },
+    "sha256": {
+      "gz": "a3d55879a0dfab1d7141fdf10d22a07dbf8e5cdc4415da1bde06127d5cc3c7b6",
+      "xz": "1b6d6010e76036c937b9671f4752f065aeca800a6c664f71f6c9a699453af94f",
+      "zip": "1fce1ab3d61d10a857dc821dab6e77fa41d0663c5dbbfaa5d9b9c2bdec5ce303"
+    },
+    "sha512": {
+      "gz": "41cf1561dd7eb249bb2c2f5ea958884880648cc1d11da9315f14158a2d0ff94b2c5c7d75291a67e57e1813d2ec7b618e5372a9f18ee93be6ed306f47b0d3199a",
+      "xz": "a627bb629a10750b8b2081ad451a41faea0fc85d95aa1e267e3d2a0f56a35bb58195d4a8d13bbdbd82f4197a96dae22b1cee1dfc83861ec33a67ece07aef5633",
+      "zip": "3a334302df97c2c7fec3c2d05d19a40b1ec6f95fef52c85d397196ce62fac4834f96783f0ac7fcba6e2a670f004bcc275db6f1810ace6c68a594e7d2fd9b297b"
+    },
     "variants": [
       "bookworm",
       "slim-bookworm",
@@ -19,10 +72,45 @@
       "slim-bullseye",
       "alpine3.19",
       "alpine3.18"
-    ],
-    "version": "3.1.4"
+    ]
   },
   "3.2": {
+    "version": "3.2.2",
+    "date": "2023-03-30",
+    "post": "/en/news/2023/03/30/ruby-3-2-2-released/",
+    "url": {
+      "gz": "https://cache.ruby-lang.org/pub/ruby/3.2/ruby-3.2.2.tar.gz",
+      "xz": "https://cache.ruby-lang.org/pub/ruby/3.2/ruby-3.2.2.tar.xz",
+      "zip": "https://cache.ruby-lang.org/pub/ruby/3.2/ruby-3.2.2.zip"
+    },
+    "size": {
+      "gz": 20467023,
+      "xz": 15118856,
+      "zip": 24615317
+    },
+    "sha1": {
+      "gz": "670fce00d83771a1349b116e56a8a3b0ad323769",
+      "xz": "087af286b70b0e17f88c9c4469b471eca2010161",
+      "zip": "a1b6d57019d41dca269b4b16a80784755d34b81d"
+    },
+    "sha256": {
+      "gz": "96c57558871a6748de5bc9f274e93f4b5aad06cd8f37befa0e8d94e7b8a423bc",
+      "xz": "4b352d0f7ec384e332e3e44cdbfdcd5ff2d594af3c8296b5636c710975149e23",
+      "zip": "cc216ecb4f49064d8f44e10ecf9218cfd7b28cf4168bb79ecdf171e321db4af1"
+    },
+    "sha512": {
+      "gz": "bcc68f3f24c1c8987d9c80b57332e5791f25b935ba38daf5addf60dbfe3a05f9dcaf21909681b88e862c67c6ed103150f73259c6e35c564f13a00f432e3c1e46",
+      "xz": "a29f24cd80f563f6368952d06d6273f7241a409fa9ab2f60e03dde2ac58ca06bee1750715b6134caebf4c061d3503446dc37a6059e19860bb0010eef34951935",
+      "zip": "569a68d89cc9a646cd0319d7cb8d57df3a55c0ac2c64f1f61607cc9c06b3aa8415eb8d38f7893ab3dbf072da9e919fbc454a9338e924c20a6a5110a1fa301d52"
+    },
+    "variants": [
+      "bookworm",
+      "slim-bookworm",
+      "bullseye",
+      "slim-bullseye",
+      "alpine3.19",
+      "alpine3.18"
+    ],
     "rust": {
       "version": "1.74.1"
     },
@@ -54,8 +142,44 @@
         }
       },
       "version": "1.26.0"
+    }
+  },
+  "3.3": null,
+  "3.3-rc": {
+    "version": "3.3.0-rc1",
+    "date": "2023-12-11",
+    "post": "/en/news/2023/12/11/ruby-3-3-0-rc1-released/",
+    "tag": "v3_3_0_rc1",
+    "stats": {
+      "files_changed": 5414,
+      "insertions": 306141,
+      "deletions": 183575
+    },
+    "url": {
+      "gz": "https://cache.ruby-lang.org/pub/ruby/3.3/ruby-3.3.0-rc1.tar.gz",
+      "zip": "https://cache.ruby-lang.org/pub/ruby/3.3/ruby-3.3.0-rc1.zip",
+      "xz": "https://cache.ruby-lang.org/pub/ruby/3.3/ruby-3.3.0-rc1.tar.xz"
+    },
+    "size": {
+      "gz": 21783575,
+      "zip": 26735443,
+      "xz": 16163884
+    },
+    "sha1": {
+      "gz": "c75a860e06f27b7f69b874757417277c21d1d3f4",
+      "zip": "35583453a7734216b08829ef0ec9ea1bc0d4ae7f",
+      "xz": "26503f9bdc7d0a05aaa9836f54d3aa9e74a9ead9"
+    },
+    "sha256": {
+      "gz": "c4ff82395a90ef76c7f906b7687026e0ab96b094dcf3a532d9ab97784a073222",
+      "zip": "56dd82e1dd714f2889ca975ae7befbe005675de08839c2cc4a484de2ae65201c",
+      "xz": "051815637f1fa75a1edf2c54b66d5d5b69563daad777da8dc39543b7754b5290"
+    },
+    "sha512": {
+      "gz": "265fb2ffe55af47d8349edffcebe749cc170291227cef55529fe4e67363e4e84b88daa34ffb5364a99c8a0e32110266a34c9a11d62f3bd6f6d47fa76eca641f4",
+      "zip": "7fbe414c230aedc9f364512bcbc213038f8f6e4268929a559d2527e2f3e32a140b394e37098ab7e59161236eca8b89cc9e52d73a3be8d7bd44faa91681483f5d",
+      "xz": "82f4acfaad1dc47db27ee3eb952481a95b3474a98059e9e9f5ceb035b690d1faabe99f2ec52371c4089ed1615eb10c395f029088418fec4d26399b65b4f259b9"
     },
-    "sha256": "4b352d0f7ec384e332e3e44cdbfdcd5ff2d594af3c8296b5636c710975149e23",
     "variants": [
       "bookworm",
       "slim-bookworm",
@@ -64,9 +188,6 @@
       "alpine3.19",
       "alpine3.18"
     ],
-    "version": "3.2.2"
-  },
-  "3.3-rc": {
     "rust": {
       "version": "1.74.1"
     },
@@ -98,16 +219,6 @@
         }
       },
       "version": "1.26.0"
-    },
-    "sha256": "051815637f1fa75a1edf2c54b66d5d5b69563daad777da8dc39543b7754b5290",
-    "variants": [
-      "bookworm",
-      "slim-bookworm",
-      "bullseye",
-      "slim-bullseye",
-      "alpine3.19",
-      "alpine3.18"
-    ],
-    "version": "3.3.0-rc1"
+    }
   }
 }
diff --git a/versions.sh b/versions.sh
index 061ee394a1..6b8b185335 100755
--- a/versions.sh
+++ b/versions.sh
@@ -12,9 +12,26 @@ else
 fi
 versions=( "${versions[@]%/}" )
 
-releasesPage="$(curl -fsSL 'https://www.ruby-lang.org/en/downloads/releases/' | grep -A 2 '<td>Ruby')" # very wide grep to cut down on "set -x" output when debugging (should match the one later)
-newsPage="$(curl -fsSL 'https://www.ruby-lang.org/en/news/' | grep 'Released</a>')" # occasionally, releases don't show up on the Releases page (see https://github.com/ruby/www.ruby-lang.org/blob/master/_data/releases.yml)
-# TODO consider parsing https://github.com/ruby/www.ruby-lang.org/blob/master/_data/downloads.yml as well
+yq='./.yq'
+# https://github.com/mikefarah/yq/releases
+# TODO detect host architecture
+yqUrl='https://github.com/mikefarah/yq/releases/download/v4.40.5/yq_linux_amd64'
+yqSha256='0d6aaf1cf44a8d18fbc7ed0ef14f735a8df8d2e314c4cc0f0242d35c0a440c95'
+if command -v yq &> /dev/null; then
+	# TODO verify that the "yq" in PATH is https://github.com/mikefarah/yq, not the python-based version you'd get from "apt-get install yq" somehow?  maybe they're compatible enough for our needs that it doesn't matter?
+	yq='yq'
+elif [ ! -x "$yq" ] || ! sha256sum <<<"$yqSha256 *$yq" --quiet --strict --check; then
+	wget -qO "$yq.new" "$yqUrl"
+	sha256sum <<<"$yqSha256 *$yq.new" --quiet --strict --check
+	chmod +x "$yq.new"
+	"$yq.new" --version
+	mv "$yq.new" "$yq"
+fi
+
+releases="$(
+	wget -qO- 'https://github.com/ruby/www.ruby-lang.org/raw/master/_data/releases.yml' \
+		| "$yq" -r '@json' # this *should* work on both the Go-based "yq" we download and the Python-based "yq" available from Debian's APT repo
+)"
 
 for version in "${versions[@]}"; do
 	rcGrepV='-v'
@@ -24,75 +41,70 @@ for version in "${versions[@]}"; do
 	fi
 	export version rcVersion
 
-	IFS=$'\n'; allVersions=( $(
-		curl -fsSL --compressed "https://cache.ruby-lang.org/pub/ruby/$rcVersion/" \
-			| grep -oE '["/]ruby-'"$rcVersion"'.[^"]+\.tar\.xz' \
-			| sed -r 's!^["/]ruby-([^"]+)[.]tar[.]xz!\1!' \
-			| grep $rcGrepV -E 'preview|rc' \
-			| sort -ruV
-	) ); unset IFS
-
-	fullVersion=
-	shaVal=
-	for tryVersion in "${allVersions[@]}"; do
-		if \
-			{
-				versionReleasePage="$(grep "<td>Ruby $tryVersion</td>" -A 2 <<<"$releasesPage" | awk -F '"' '$1 == "<td><a href=" { print $2; exit }')" \
-					&& [ -n "$versionReleasePage" ] \
-					&& shaVal="$(curl -fsL "https://www.ruby-lang.org/$versionReleasePage" | grep "ruby-$tryVersion.tar.xz" -A 5)" \
-					&& shaVal="$(awk <<<"$shaVal" '$1 == "SHA256:" { print $2; exit }')" \
-					&& [ -n "$shaVal" ]
-			} \
-			|| {
-				versionReleasePage="$(grep -oE '<a href="[^"]+">Ruby '"$tryVersion"' Released</a>' <<<"$newsPage" | cut -d'"' -f2)" \
-					&& [ -n "$versionReleasePage" ] \
-					&& shaVal="$(curl -fsL "https://www.ruby-lang.org/$versionReleasePage" | grep "ruby-$tryVersion.tar.xz" -A 5)" \
-					&& shaVal="$(awk <<<"$shaVal" '$1 == "SHA256:" { print $2; exit }')" \
-					&& [ -n "$shaVal" ]
-			} \
-		; then
-			fullVersion="$tryVersion"
-			break
-		fi
-	done
+	doc="$(jq <<<"$releases" -c '
+		map(
+			select(
+				.version
+				# exact versions ("3.1.0-preview1") should match exactly but "X.Y" or "X.Y-rc" should fuzzy match appropriately
+				| . == env.version or (
+					(
+						startswith(env.rcVersion + ".")
+						or startswith(env.rcVersion + "-")
+					) and (
+						contains("preview") or contains("rc")
+						| if env.version == env.rcVersion then not else . end
+					)
+				)
+			)
+		)
+		| first // empty
+	')"
 
-	if [ -z "$fullVersion" ]; then
-		echo >&2 "error: cannot determine sha for $version (tried all of ${allVersions[*]})"
-		exit 1
+	if [ -z "$doc" ]; then
+		echo >&2 "warning: skipping/removing '$version' (does not appear to exist upstream)"
+		json="$(jq <<<"$json" -c '.[env.version] = null')"
+		continue
 	fi
 
-	echo "$version: $fullVersion; $shaVal"
+	fullVersion="$(jq <<<"$doc" -r '.version')"
+	echo "$version: $fullVersion"
 
-	export fullVersion shaVal
-	doc="$(jq -nc '
-		{
-			version: env.fullVersion,
-			sha256: env.shaVal,
-			variants: [
-				(
-					# https://bugs.ruby-lang.org/issues/18658
-					# https://github.com/docker-library/ruby/pull/392#issuecomment-1329896174
-					if  "3.0" == env.version then
-						"bullseye",
-						"buster"
-					else
-						"bookworm",
-						"bullseye",
-						empty # trailing comma hack
-					end
-				| ., "slim-" + .), # https://github.com/docker-library/ruby/pull/142#issuecomment-320012893
-				(
-					# Alpine 3.17+ defaults to OpenSSL 3 which is not supported by Ruby 3.0
-					# https://bugs.ruby-lang.org/issues/18658
-					# https://github.com/docker-library/ruby/pull/392#issuecomment-1329896174
-					if  "3.0" == env.version then "3.16" else
-						"3.19",
-						"3.18",
-						empty # trailing comma hack
-					end
-				| "alpine" + .)
-			],
-		}
+	if [ "$rcVersion" != "$version" ] && gaFullVersion="$(jq <<<"$json" -er '.[env.rcVersion] | if . then .version else empty end')"; then
+		# Ruby pre-releases have only been for .0 since ~2011, so if our pre-release now has a relevant GA, it should go away 👀
+		# just in case, we'll also do a version comparison to make sure we don't have a pre-release that's newer than the relevant GA
+		latestVersion="$({ echo "$fullVersion"; echo "$gaFullVersion"; } | sort -V | tail -1)"
+		if [[ "$fullVersion" == "$gaFullVersion"* ]] || [ "$latestVersion" = "$gaFullVersion" ]; then
+			# "x.y.z-rc1" == x.y.z*
+			json="$(jq <<<"$json" -c 'del(.[env.rcVersion])')"
+			continue
+		fi
+	fi
+
+	doc="$(jq <<<"$doc" -c '
+		.variants = [
+			(
+				# https://bugs.ruby-lang.org/issues/18658
+				# https://github.com/docker-library/ruby/pull/392#issuecomment-1329896174
+				if  "3.0" == env.version then
+					"bullseye",
+					"buster"
+				else
+					"bookworm",
+					"bullseye",
+					empty # trailing comma hack
+				end
+			| ., "slim-" + .), # https://github.com/docker-library/ruby/pull/142#issuecomment-320012893
+			(
+				# Alpine 3.17+ defaults to OpenSSL 3 which is not supported by Ruby 3.0
+				# https://bugs.ruby-lang.org/issues/18658
+				# https://github.com/docker-library/ruby/pull/392#issuecomment-1329896174
+				if  "3.0" == env.version then "3.16" else
+					"3.19",
+					"3.18",
+					empty # trailing comma hack
+				end
+			| "alpine" + .)
+		]
 	')"
 
 	case "$rcVersion" in
@@ -113,6 +125,11 @@ for version in "${versions[@]}"; do
 	esac
 
 	json="$(jq <<<"$json" -c --argjson doc "$doc" '.[env.version] = $doc')"
+
+	# make sure pre-release versions have a placeholder for GA
+	if [ "$version" != "$rcVersion" ]; then
+		json="$(jq <<<"$json" -c '.[env.rcVersion] //= null')"
+	fi
 done
 
-jq <<<"$json" -S . > versions.json
+jq <<<"$json" 'to_entries | sort_by(.key) | from_entries' > versions.json