diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index c6ef86ee..11f1979b 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -2,6 +2,10 @@ name: Tests
 
 on: [push, pull_request]
 
+env:
+    php-options: -C -d opcache.enable=0
+    php-extensions: fileinfo, intl
+
 jobs:
     tests:
         runs-on: ${{ matrix.os }}
@@ -20,10 +24,10 @@ jobs:
               with:
                   php-version: ${{ matrix.php }}
                   coverage: none
-                  extensions: fileinfo, intl
+                  extensions: ${{ env.php-extensions }}
 
             - run: composer install --no-progress --prefer-dist
-            - run: vendor/bin/tester tests -p ${{ matrix.sapi }} -s -C
+            - run: vendor/bin/tester tests -p ${{ matrix.sapi }} -s ${{ env.php-options }}
             - if: failure()
               uses: actions/upload-artifact@v2
               with:
@@ -40,10 +44,10 @@ jobs:
               with:
                   php-version: 8.0
                   coverage: none
-                  extensions: fileinfo, intl
+                  extensions: ${{ env.php-extensions }}
 
             - run: composer update --no-progress --prefer-dist --prefer-lowest --prefer-stable
-            - run: vendor/bin/tester tests -s -C
+            - run: vendor/bin/tester tests -s ${{ env.php-options }}
 
 
     code_coverage:
@@ -55,10 +59,10 @@ jobs:
               with:
                   php-version: 8.0
                   coverage: none
-                  extensions: fileinfo, intl
+                  extensions: ${{ env.php-extensions }}
 
             - run: composer install --no-progress --prefer-dist
-            - run: vendor/bin/tester -p phpdbg tests -s -C --coverage ./coverage.xml --coverage-src ./src
+            - run: vendor/bin/tester tests -p phpdbg -s ${{ env.php-options }} --coverage ./coverage.xml --coverage-src ./src
             - run: wget https://github.com/php-coveralls/php-coveralls/releases/download/v2.4.3/php-coveralls.phar
             - env:
                   COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}