diff --git a/CHANGELOG.md b/CHANGELOG.md
index 838f86c49..e1b648f92 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # CHANGELOG
 
+## v0.3.9
+
+- Updated with changes from upstream Sorbet as of July 28 2023. (05866f6cfc5339e1e7a6d7e399ff92af594e3f9b)
+  - This includes a fix for an assertion triggered in type-checking.
+    (https://github.com/sourcegraph/scip-ruby/issues/192)
+
 ## v0.3.8
 
 Fixes 3 different bugs related to assertions being hit
diff --git a/Dockerfile.autoindex b/Dockerfile.autoindex
index 756f81ec2..fd37fa962 100644
--- a/Dockerfile.autoindex
+++ b/Dockerfile.autoindex
@@ -11,7 +11,7 @@ RUN apk add --no-cache bash wget make libstdc++ gcc g++ automake autoconf gcompa
 # because release builds are very time-consuming.
 #
 # The release version is verified by tools/scripts/publish-scip-ruby.sh
-RUN wget https://github.com/sourcegraph/scip-ruby/releases/download/scip-ruby-v0.3.8/scip-ruby-x86_64-linux -O /usr/bin/scip-ruby && chmod +x /usr/bin/scip-ruby
+RUN wget https://github.com/sourcegraph/scip-ruby/releases/download/scip-ruby-v0.3.9/scip-ruby-x86_64-linux -O /usr/bin/scip-ruby && chmod +x /usr/bin/scip-ruby
 
 COPY scip_indexer/autoindex.sh /usr/bin/scip-ruby-autoindex
 
diff --git a/scip_indexer/SCIPIndexer.cc b/scip_indexer/SCIPIndexer.cc
index e792295d6..15789dadd 100644
--- a/scip_indexer/SCIPIndexer.cc
+++ b/scip_indexer/SCIPIndexer.cc
@@ -61,7 +61,7 @@ static uint32_t fnv1a_32(const string &s) {
     return h;
 }
 
-const char scip_ruby_version[] = "0.3.8";
+const char scip_ruby_version[] = "0.3.9";
 
 // Last updated: https://github.com/sourcegraph/scip-ruby/pull/205
 const char scip_ruby_sync_upstream_sorbet_sha[] = "05866f6cfc5339e1e7a6d7e399ff92af594e3f9b";