diff --git a/git-anonymize b/git-anonymize
new file mode 100755
index 0000000..b7bac62
--- /dev/null
+++ b/git-anonymize
@@ -0,0 +1,7 @@
+#!/bin/zsh
+
+git filter-branch --force --env-filter '
+    export GIT_AUTHOR_NAME="anonymous"
+    export GIT_AUTHOR_EMAIL="anonymous@localhost"
+    export GIT_COMMITTER_NAME="anonymous"
+    export GIT_COMMITTER_EMAIL="anonymous@localhost"' -- --all