diff --git a/scripts/build-appimage.sh b/scripts/build-appimage.sh
index b257abf..cd39664 100755
--- a/scripts/build-appimage.sh
+++ b/scripts/build-appimage.sh
@@ -54,6 +54,8 @@ install_pyinstaller() {
     "$VENV_DIR/bin/pip" install pyinstaller
     # Install project dependencies for bundling
     "$VENV_DIR/bin/pip" install -r "$PROJECT_DIR/requirements.txt"
+    # Install wasmtime for HASHAB signing (iPod Nano 6G/7G)
+    "$VENV_DIR/bin/pip" install wasmtime
 }
 
 download_appimagetool() {