diff --git a/.github/workflows/check.yml b/.github/workflows/check.yaml
similarity index 100%
rename from .github/workflows/check.yml
rename to .github/workflows/check.yaml
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yaml
similarity index 94%
rename from .github/workflows/ci.yml
rename to .github/workflows/ci.yaml
index 986bc7128c..55d55336b5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yaml
@@ -26,7 +26,7 @@ on:
 
 jobs:
   build:
-    uses: ./.github/workflows/check.yml
+    uses: ./.github/workflows/check.yaml
     with:
       script: build
       script-args: -Prelease
@@ -40,7 +40,7 @@ jobs:
       matrix:
         java: [ 11, 17, 21 ]
       fail-fast: false
-    uses: ./.github/workflows/check.yml
+    uses: ./.github/workflows/check.yaml
     with:
       java-version: ${{ matrix.java }}
       needs-source-tarball: true
@@ -53,7 +53,7 @@ jobs:
   repro:
     needs:
       - build
-    uses: ./.github/workflows/check.yml
+    uses: ./.github/workflows/check.yaml
     with:
       needs-maven-repo: true
       script: repro
@@ -70,7 +70,7 @@ jobs:
           - findbugs
           - rat
       fail-fast: false
-    uses: ./.github/workflows/check.yml
+    uses: ./.github/workflows/check.yaml
     with:
       script: ${{ matrix.check }}
       timeout-minutes: 30
@@ -84,7 +84,7 @@ jobs:
           - server
           - misc
       fail-fast: false
-    uses: ./.github/workflows/check.yml
+    uses: ./.github/workflows/check.yaml
     with:
       script: unit
       script-args: -P${{ matrix.profile }}-tests
diff --git a/.github/workflows/post-commit.yml b/.github/workflows/post-commit.yaml
similarity index 96%
rename from .github/workflows/post-commit.yml
rename to .github/workflows/post-commit.yaml
index 9b0df4ce40..583eb7bcf5 100644
--- a/.github/workflows/post-commit.yml
+++ b/.github/workflows/post-commit.yaml
@@ -29,5 +29,5 @@ concurrency:
 
 jobs:
   CI:
-    uses: ./.github/workflows/ci.yml
+    uses: ./.github/workflows/ci.yaml
     secrets: inherit
diff --git a/.github/workflows/repeat-test.yml b/.github/workflows/repeat-test.yaml
similarity index 100%
rename from .github/workflows/repeat-test.yml
rename to .github/workflows/repeat-test.yaml