diff --git a/git/gitconfig b/git/gitconfig
index 5d942af..a6ecae4 100644
--- a/git/gitconfig
+++ b/git/gitconfig
@@ -18,6 +18,8 @@
     sd = diff --name-status
     last = cat-file commit HEAD
 
+    trim = "!f() { git fetch --all --prune; git branch -vv | awk '/: gone]/{print $1}' | xargs git branch -D; }; f"
+
 [color "branch"]
     current = bold blue