diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index dfda727..052aa2a 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -78,6 +78,9 @@ jobs:
                       php: '8.1'
                     - phpunit: '^8.0'
                       php: '7.1'
+                    - phpunit: '^8.0'
+                      php: '8.1'
+                      dependency-version: 'prefer-lowest'
                     - phpunit: '^9.0'
                       php: '7.1'
                     - phpunit: '^9.0'
@@ -99,10 +102,11 @@ jobs:
                   path: ~/.composer/cache/files
                   key: dependencies-${{ matrix.dependency-version }}-phpunit-${{ matrix.phpunit }}-php-${{ matrix.php }}-composer-${{ hashFiles('composer.json') }}-v3
 
+            - name: Require the dependency matrix version
+              run: composer require 'phpunit/phpunit:${{ matrix.phpunit }}' --no-update --no-interaction --verbose --no-scripts
+
             - name: Install dependencies
-              run: |
-                  composer require 'phpunit/phpunit:${{ matrix.phpunit }}' --no-update --no-interaction --verbose --no-scripts
-                  composer update --${{ matrix.dependency-version }} --no-suggest --no-interaction --verbose --no-scripts
+              run: composer update --${{ matrix.dependency-version }} --no-suggest --no-interaction --verbose --no-scripts
 
             - name: Check platform requirements
               run: composer check-platform-reqs --verbose