diff --git a/.travis.yml b/.travis.yml
index ad1dbef..a7b0ea9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -30,11 +30,11 @@ script:
   - xcodebuild -version
   - xcodebuild -showsdks
   - if [ $RUN_TESTS == "YES" ]; then 
-      xcodebuild -workspace CoreStore.xcworkspace -scheme "$SCHEME" -sdk "$SDK" -destination "$DESTINATION" -configuration Debug ONLY_ACTIVE_ARCH=NO test | xcpretty -c;
-      xcodebuild -workspace CoreStore.xcworkspace -scheme "$SCHEME" -sdk "$SDK" -destination "$DESTINATION" -configuration Release ONLY_ACTIVE_ARCH=NO test | xcpretty -c;
+      xcodebuild -workspace CoreStore.xcworkspace -scheme "$SCHEME" -sdk "$SDK" -destination "$DESTINATION" -configuration Debug ONLY_ACTIVE_ARCH=NO clean test | xcpretty -c;
+      xcodebuild -workspace CoreStore.xcworkspace -scheme "$SCHEME" -sdk "$SDK" -destination "$DESTINATION" -configuration Release ONLY_ACTIVE_ARCH=NO clean test | xcpretty -c;
     fi
-  - xcodebuild -workspace "CoreStore.xcworkspace" -scheme "CoreStore iOS" -sdk "iphonesimulator9.1" -destination "OS=9.1,name=iPhone 6s" -configuration Debug ONLY_ACTIVE_ARCH=NO test | xcpretty -c;
-  - xcodebuild -workspace "CoreStore.xcworkspace" -scheme "CoreStore iOS" -sdk "iphonesimulator9.1" -destination "OS=9.1,name=iPhone 6s" -configuration Release ONLY_ACTIVE_ARCH=NO test | xcpretty -c;
+  - xcodebuild -workspace "CoreStore.xcworkspace" -scheme "CoreStore iOS" -sdk "iphonesimulator9.1" -destination "OS=9.1,name=iPhone 6s" -configuration Debug ONLY_ACTIVE_ARCH=NO clean test | xcpretty -c;
+  - xcodebuild -workspace "CoreStore.xcworkspace" -scheme "CoreStore iOS" -sdk "iphonesimulator9.1" -destination "OS=9.1,name=iPhone 6s" -configuration Release ONLY_ACTIVE_ARCH=NO clean test | xcpretty -c;
   - if [ $POD_LINT == "YES" ]; then
       pod lib lint --quick;
     fi