diff --git a/.travis.yml b/.travis.yml
index 8a3f02b..1a06442 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -17,7 +17,7 @@ before_script:
       travis_wait 45 carthage bootstrap --platform iOS
     fi
   - |
-    if [ ! $(git diff --name-only master..."$TRAVIS_COMMIT" | grep "gopenpgp_build.sh") ] && [ -d "go/dist" ]; then
+    if [ ! $(git diff --name-only master..."$TRAVIS_COMMIT" | grep -E "gopenpgp_build.sh|gopenpgpwrapper.go") ] && [ -d "go/dist" ]; then
       echo "Use cached go dependencies."
     else
       echo "Build go dependencies."
@@ -28,7 +28,7 @@ script:
 cache:
   directories:
     - Carthage
-    - go
+    - go/dist
 env:
   global:
   - secure: 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