diff --git a/.gitignore b/.gitignore
index 51c502d..fc8ca2e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,9 +1,14 @@
 # Do not edit this file. It is automatically generated by https://www.oliverdavies.uk/build-configs.
 
+/.phpunit.cache
 /.phpunit.result.cache
 /output_*/
 /vendor/
 
+# Front-end assets.
+node_modules
+source/build
+
 /.direnv/
 
 /flake.lock