diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 65ad6218..26035b7e 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -2,7 +2,18 @@ name: Test
 
 on:
   push:
+    # Only run the (slow) full tests if FORM source code, tests or this file change.
+    # The "deploy" workflow still compiles FORM and runs basic `make check` unconditionally.
+    paths:
+      - "sources/**"
+      - "check/**"
+      - ".github/workflows/test.yml"
   pull_request:
+    paths:
+      - "sources/**"
+      - "check/**"
+      - ".github/workflows/test.yml"
+    # Manually triggered CI runs will still run the full set of tests.
   workflow_dispatch:
 
 env: