diff --git a/.github/workflows/run_tests.yml b/.github/workflows/run_tests.yml
index 633a9e2..9ef3eb0 100644
--- a/.github/workflows/run_tests.yml
+++ b/.github/workflows/run_tests.yml
@@ -25,10 +25,16 @@ jobs:
             php: 7.1
           - laravel: 5.6.*
             php: 8.0
+          - laravel: 5.6.*
+            dependency-version: prefer-lowest
           - laravel: 5.7.*
             php: 8.0
+          - laravel: 5.7.*
+            dependency-version: prefer-lowest
           - laravel: 5.8.*
             php: 8.0
+          - laravel: 5.8.*
+            dependency-version: prefer-lowest
 
     name: PHP ${{ matrix.php }}  - Laravel ${{ matrix.laravel }} - Testbench ${{ matrix.testbench }} (${{ matrix.dependency-version }})
 
diff --git a/composer.json b/composer.json
index 9d731a0..17a9804 100644
--- a/composer.json
+++ b/composer.json
@@ -12,8 +12,8 @@
     "prefer-stable": true,
     "require": {
         "php": "^7.1.3|^8.0",
-        "illuminate/contracts": "^5.6|^6.0",
-        "illuminate/http": "^5.6|^6.0",
+        "illuminate/contracts": "~5.6.40|~5.7.29|~5.8.38|^6.0",
+        "illuminate/http": "~5.6.40|~5.7.29|~5.8.38|^6.0",
         "s1lentium/iptools": "^1.1"
     },
     "require-dev": {