diff --git a/build.sh b/build.sh
index 4a4d1c2..eb092c8 100755
--- a/build.sh
+++ b/build.sh
@@ -10,6 +10,7 @@ install_deps() {
 free_space() {
   if [[ $INPUTS_LITTLE_SPACE == 'true' ]]; then
     rm -rf ./result
+    nix-collect-garbage -d
     nix store gc 
   fi
 }