diff --git a/libfuse/tst-build.sh b/libfuse/tst-build.sh
index 82ec393ffb61485a041137f9da36a41840ade8c4..80de80c79d807d4d6d1c52fef6ba09529e96e7d1 100755
--- a/libfuse/tst-build.sh
+++ b/libfuse/tst-build.sh
@@ -48,6 +48,27 @@ ensure_meson_version() {
     echo "meson upgraded to $current via pip"
 }
 
+ensure_pytest_deps() {
+    local pyver
+    pyver=$(python3 -c 'import sys; print(sys.version_info[:2])' 2>/dev/null)
+
+    if python3 -c 'import importlib_metadata' 2>/dev/null; then
+        echo "importlib_metadata already available, OK"
+        return 0
+    fi
+
+    if python3 -c 'import importlib.metadata' 2>/dev/null; then
+        echo "importlib.metadata (stdlib) available, OK"
+        return 0
+    fi
+
+    echo "Python $pyver lacks importlib.metadata, installing backport via pip..."
+    pip3 install -i https://mirrors.tencent.com/pypi/simple/ \
+        --trusted-host mirrors.tencent.com \
+        'importlib-metadata<5.0' 'typing_extensions>=3.6.4' 'zipp>=0.5' || return 1
+    echo "importlib-metadata installed successfully"
+}
+
 build_tool() {
     cp -r "$g_tool_dir" "$g_install_dir" && cd "$g_install_dir/libfuse" || return 1
 
@@ -104,6 +125,7 @@ main() {
     done
 
     ensure_meson_version || return 1
+    ensure_pytest_deps || return 1
 
     mkdir -p "$g_install_dir"
     if build_tool; then