diff --git a/update-defines.sh b/update-defines.sh
index b1f184a..1b97adf 100755
--- a/update-defines.sh
+++ b/update-defines.sh
@@ -5,6 +5,10 @@ mkdir -p ${INC}
 
 if [[ ! -d merlin-code ]]; then
 	git clone https://github.com/dwsJason/f256.git merlin-code
+else
+	pushd merlin-code
+		git pull
+	popd
 fi
 
 pushd merlin-code/merlin32/jr