diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index e4d67f4608..30d165d191 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -42,7 +42,7 @@ jobs:
           sed -i '' 's/4.0.0/4.2.1/' Info.plist
           brew install mysql
           make
-          ditto -ck --keepParent --rsrc --sequesterRsrc ./dist/CellProfiler.app ./dist/CellProfiler-macOS-4.0.7.zip
+          ditto -ck --keepParent --rsrc --sequesterRsrc ./dist/CellProfiler.app ./dist/CellProfiler-macOS-4.2.1.zip
         working-directory: ./distribution/macos
       - env:
           JDK_HOME: C:\hostedtoolcache\windows\jdk\14.0.1\x64