diff --git a/.github/workflows/standard_library_upgrade_tests.yml b/.github/workflows/standard_library_upgrade_tests.yml
index 8add14ad7..1e884376d 100644
--- a/.github/workflows/standard_library_upgrade_tests.yml
+++ b/.github/workflows/standard_library_upgrade_tests.yml
@@ -28,7 +28,7 @@ jobs:
         run: |
           echo "::set-output name=matrix::$(
             jq --compact-output \
-            '.supported_environment | map([.+{os: "ubuntu-20.04-xl", codeql_standard_library_ident : .codeql_standard_library | sub("\/"; "_")}]) | flatten | {include: .}' \
+            '.supported_environment | map([.+{os: "ubuntu-24.04-xl", codeql_standard_library_ident : .codeql_standard_library | sub("\/"; "_")}]) | flatten | {include: .}' \
             supported_codeql_configs.json
           )"
 
diff --git a/.github/workflows/verify-standard-library-dependencies.yml b/.github/workflows/verify-standard-library-dependencies.yml
index 5801c29aa..abf626467 100644
--- a/.github/workflows/verify-standard-library-dependencies.yml
+++ b/.github/workflows/verify-standard-library-dependencies.yml
@@ -31,7 +31,7 @@ jobs:
         run: |
           echo "::set-output name=matrix::$(
             jq --compact-output \
-            '.supported_environment | map([.+{os: "ubuntu-20.04-xl", codeql_standard_library_ident : .codeql_standard_library | sub("\/"; "_")}]) | flatten | {include: .}' \
+            '.supported_environment | map([.+{os: "ubuntu-24.04-xl", codeql_standard_library_ident : .codeql_standard_library | sub("\/"; "_")}]) | flatten | {include: .}' \
             supported_codeql_configs.json
           )"