diff --git a/.gitignore b/.gitignore
index 73e99fb85..f22750d6a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,5 +6,6 @@
 
 /.direnv/
 
+/.phpunit.cache/
 /assets/node_modules/
 /source/build/
diff --git a/build.yaml b/build.yaml
index aa234b523..81aa13b87 100644
--- a/build.yaml
+++ b/build.yaml
@@ -13,5 +13,6 @@ flake:
 
 git:
   ignore:
+    - '/.phpunit.cache/'
     - '/assets/node_modules/'
     - '/source/build/'