diff --git a/.github/workflows/build-and-test.yml b/.github/workflows/build-and-test.yml
index 207f4555b..2face7101 100644
--- a/.github/workflows/build-and-test.yml
+++ b/.github/workflows/build-and-test.yml
@@ -44,7 +44,7 @@ on:
 env:
   spm-build-options: -Xswiftc -enable-testing --explicit-target-dependency-import-check error
   spm-test-options: --parallel
-  swift-version: '5.10'
+  swift-version: '5.10.0'
 
 jobs:
   determine-version:
diff --git a/.github/workflows/doc-extraction.yml b/.github/workflows/doc-extraction.yml
index 243f1a3d5..00290f787 100644
--- a/.github/workflows/doc-extraction.yml
+++ b/.github/workflows/doc-extraction.yml
@@ -30,7 +30,7 @@ jobs:
     env:
       llvm_url_prefix: https://github.com/hylo-lang/llvm-build/releases/download/20240303-215025
       llvm_package_basename: llvm-17.0.6-arm64-apple-darwin23.3.0-MinSizeRel
-      swift-version: '5.10'
+      swift-version: '5.10.0'
 
     steps:
     - uses: actions/checkout@v4