diff --git a/.github/workflows/check_scala3_nightly.yml b/.github/workflows/check_scala3_nightly.yml
deleted file mode 100644
index ca9cfb10eee..00000000000
--- a/.github/workflows/check_scala3_nightly.yml
+++ /dev/null
@@ -1,22 +0,0 @@
-name: "Check Scala nightly release"
-on:
-  workflow_dispatch:
-  schedule:
-    - cron: 0 5 * * *
-jobs:
-  test_and_release:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-java@v3
-        with:
-          distribution: "temurin"
-          java-version: "17"
-      - name: "Query maven-central"
-        run: |
-          sbt 'save-non-published-nightlies versions'
-          while IFS= read -r version; do
-            gh workflow run mtags-auto-release.yml -f scala_version=$version
-          done <versions
-        env:
-          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/build.sbt b/build.sbt
index 8423aa8d18d..23fe071f2cd 100644
--- a/build.sbt
+++ b/build.sbt
@@ -147,12 +147,6 @@ commands ++= Seq(
   Command.single("test-mtags-dyn") { (s, scalaV) =>
     crossTestDyn(s, scalaV)
   },
-  // this is one is needed for `.github/workflows/check_scala3_nightly`
-  Command.single("save-non-published-nightlies") { (s, path) =>
-    val versions = Scala3NightlyVersions.nonPublishedNightlyVersions
-    IO.write(file(path), versions.map(_.original).mkString("\n"))
-    s
-  },
 )
 
 // -Xlint is unusable because of
diff --git a/project/V.scala b/project/V.scala
index de6f01175e5..b3ae25a34a9 100644
--- a/project/V.scala
+++ b/project/V.scala
@@ -46,8 +46,9 @@ object V {
   val lsp4j = "org.eclipse.lsp4j" % "org.eclipse.lsp4j" % lsp4jV
   val dap4j = "org.eclipse.lsp4j" % "org.eclipse.lsp4j.debug" % lsp4jV
 
-  def isNightliesEnabled: Boolean =
-    sys.env.get("CI").isDefined || sys.env.get("NIGHTLIES").isDefined
+  // https://github.com/scalameta/metals/issues/5427
+  def isNightliesEnabled: Boolean = false
+  // sys.env.get("CI").isDefined || sys.env.get("NIGHTLIES").isDefined
 
   // List of supported Scala versions in SemanticDB. Needs to be manually updated
   // for every SemanticDB upgrade.