diff --git a/update_antidote.sh b/update_antidote.sh
index ad4c83b..6e7d159 100755
--- a/update_antidote.sh
+++ b/update_antidote.sh
@@ -1,7 +1,13 @@
 #!/usr/bin/env zsh
 
+! [[ -z $DEBUG ]] && set -x
+
 # clone antidote if necessary
-[[ -e ~/.antidote ]] || git clone https://github.com/mattmc3/antidote.git ~/.antidote
+if [[ -d ~/.antidote ]]; then
+    git -C ~/.antidote pull
+else
+    git clone https://github.com/mattmc3/antidote.git ~/.antidote
+fi
 
 # source antidote
 . ~/.antidote/antidote.zsh