diff --git a/install.sh b/install.sh
index c4e68e0..7c045f9 100755
--- a/install.sh
+++ b/install.sh
@@ -144,6 +144,9 @@ resolve_source_dir() {
     if [[ -z "$branch" ]]; then
         branch="main"
     fi
+    if [[ "$branch" != "main" ]]; then
+        branch="$(normalize_release_tag "$branch")"
+    fi
     local url="https://github.com/tw93/mole/archive/refs/heads/main.tar.gz"
 
     # If a specific version is requested (e.g. V1.0.0), use the tag URL
@@ -233,6 +236,15 @@ get_latest_release_tag_from_git() {
         tail -n 1
 }
 
+normalize_release_tag() {
+    local tag="$1"
+    tag="${tag#v}"
+    tag="${tag#V}"
+    if [[ -n "$tag" ]]; then
+        printf 'V%s\n' "$tag"
+    fi
+}
+
 get_installed_version() {
     local binary="$INSTALL_DIR/mole"
     if [[ -x "$binary" ]]; then
diff --git a/mole b/mole
index 6c3b765..1ac5cf0 100755
--- a/mole
+++ b/mole
@@ -25,7 +25,7 @@ source "$SCRIPT_DIR/lib/core/common.sh"
 trap cleanup_temp_files EXIT INT TERM
 
 # Version info
-VERSION="1.15.10"
+VERSION="1.16.0"
 MOLE_TAGLINE="Deep clean and optimize your Mac."
 
 # Check TouchID configuration
@@ -430,11 +430,12 @@ update_mole() {
 
     # Run installer with visible output (but capture for error handling)
     local install_output
-    if install_output=$(MOLE_VERSION="V${latest}" "$tmp_installer" --prefix "$install_dir" --config "$HOME/.config/mole" --update 2>&1); then
+    local update_tag="V${latest#V}"
+    if install_output=$(MOLE_VERSION="$update_tag" "$tmp_installer" --prefix "$install_dir" --config "$HOME/.config/mole" --update 2>&1); then
         process_install_output "$install_output"
     else
         # Retry without --update flag
-        if install_output=$(MOLE_VERSION="V${latest}" "$tmp_installer" --prefix "$install_dir" --config "$HOME/.config/mole" 2>&1); then
+        if install_output=$(MOLE_VERSION="$update_tag" "$tmp_installer" --prefix "$install_dir" --config "$HOME/.config/mole" 2>&1); then
             process_install_output "$install_output"
         else
             if [[ -t 1 ]]; then stop_inline_spinner; fi