diff --git a/checks/phpstan.nix b/checks/phpstan.nix
index baf4154..885e4d7 100644
--- a/checks/phpstan.nix
+++ b/checks/phpstan.nix
@@ -25,7 +25,7 @@ in
     buildPhase = ''
       runHook preBuild
 
-      phpstan analyse
+      phpstan analyse --memory-limit 1G
 
       runHook postBuild
     '';