diff --git a/.github/workflows/php.yml b/.github/workflows/php.yml
index decb80f..9db36ad 100644
--- a/.github/workflows/php.yml
+++ b/.github/workflows/php.yml
@@ -14,7 +14,7 @@ jobs:
 
     strategy:
       matrix:
-        version: [7.3, 7.4, 8.0, 8.1, 8.2, 8.3, 8.4]
+        version: ['7.3', '7.4', '8.0', '8.1', '8.2', '8.3', '8.4', '8.5']
 
     runs-on: ubuntu-latest
 
diff --git a/Makefile b/Makefile
index 137b35f..7ed4ffc 100644
--- a/Makefile
+++ b/Makefile
@@ -40,6 +40,7 @@ test:
 
 .PHONY: test-all
 test-all:
+	PHP_VERSION=8.5 $(MAKE) build update sniff test
 	PHP_VERSION=8.4 $(MAKE) build update sniff test
 	PHP_VERSION=8.3 $(MAKE) build update sniff test
 	PHP_VERSION=8.2 $(MAKE) build update sniff test