diff --git a/scripts/prepare b/scripts/prepare
index be066fe42475a225f1638b48fba05bac530e823f..0186affcbb4d3203d76d6bd5eb06553173bec124 100755
--- a/scripts/prepare
+++ b/scripts/prepare
@@ -3,5 +3,5 @@
 PROJDIR="$(cd "$(dirname "${0}")/../" && pwd)"
 
 if [[ ! -d "${PROJDIR}/lib/qtil" ]]; then
-    git clone https://github.com/akiraohgaki/qtil.git -b release-0.3.1 --single-branch --depth=1 "${PROJDIR}/lib/qtil"
+    git clone https://github.com/akiraohgaki/qtil.git -b release-0.4.0 --single-branch --depth=1 "${PROJDIR}/lib/qtil"
 fi