diff --git a/.github/workflows/exercise-lint-phpcs-psr-12.yml b/.github/workflows/exercise-lint-phpcs-psr-12.yml
index 39b62b98..97426733 100644
--- a/.github/workflows/exercise-lint-phpcs-psr-12.yml
+++ b/.github/workflows/exercise-lint-phpcs-psr-12.yml
@@ -27,7 +27,7 @@ jobs:
 
       - uses: actions/checkout@v2
 
-      - uses: shivammathur/setup-php@46fc8a2fd7cba50512858026dc8f0947c8a7a0e8
+      - uses: shivammathur/setup-php@15b20027cf4e61cb21f2582a8f125cafb1c0492e
         with:
           php-version: ${{ matrix.php-version }}
           extensions: gmp
diff --git a/.github/workflows/exercise-tests-phpunit-9.yml b/.github/workflows/exercise-tests-phpunit-9.yml
index 38c287af..f22f844e 100644
--- a/.github/workflows/exercise-tests-phpunit-9.yml
+++ b/.github/workflows/exercise-tests-phpunit-9.yml
@@ -27,7 +27,7 @@ jobs:
 
       - uses: actions/checkout@v2
 
-      - uses: shivammathur/setup-php@46fc8a2fd7cba50512858026dc8f0947c8a7a0e8
+      - uses: shivammathur/setup-php@15b20027cf4e61cb21f2582a8f125cafb1c0492e
         with:
           version: ${{ matrix.php-version }}
           extensions: gmp