diff --git a/.woodpecker/snapshot.yaml b/.woodpecker/snapshot.yaml
index 964a71081..bfa0efcb5 100644
--- a/.woodpecker/snapshot.yaml
+++ b/.woodpecker/snapshot.yaml
@@ -13,6 +13,13 @@ clone:
 
 steps:
   snapshot:
+    # Snapshot only if some interesting
+    # source code files have changed.
+    when:
+      # https://woodpecker-ci.org/docs/usage/workflow-syntax#evaluate
+      # https://woodpecker-ci.org/docs/usage/environment#built-in-environment-variables
+      - evaluate: '(not ("CI_PIPELINE_FILES" in $env)) || any(fromJSON(CI_PIPELINE_FILES), { # startsWith "internal/" || # startsWith "cmd/" || # startsWith "testrig/" || # startsWith "vendor/" || # startsWith "web/"  || # == "Dockerfile" })'
+
     # https://codeberg.org/superseriousbusiness/gotosocial-woodpecker-build
     image: superseriousbusiness/gotosocial-woodpecker-build:0.10.0
     pull: true