diff --git a/install.sh b/install.sh
index b584a87..87b941f 100644
--- a/install.sh
+++ b/install.sh
@@ -47,10 +47,10 @@ pre_check() {
     fi
 
     if [[ -z "${CN}" ]]; then
-        LSKYPRO_RELEASE_URL="github.com/lsky-org/lsky-pro/releases/download"
+        LSKYPRO_RELEASE_URL="https://github.com/lsky-org/lsky-pro/releases/download"
         LSKY_VERSION=$(curl -s "https://api.github.com/repos/lsky-org/lsky-pro/releases/latest" | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/')
     else
-        LSKYPRO_RELEASE_URL="github.com/lsky-org/lsky-pro/releases/download"
+        LSKYPRO_RELEASE_URL="https://github.com/lsky-org/lsky-pro/releases/download"
         LSKY_VERSION=$(curl -s "https://api.github.com/repos/lsky-org/lsky-pro/releases/latest" | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/')
     fi
 }