diff --git a/project/yocto/layers/meta-user/recipes-ros2/uncrustify-vendor/uncrustify-vendor_%.bbappend b/project/yocto/layers/meta-user/recipes-ros2/uncrustify-vendor/uncrustify-vendor_%.bbappend
new file mode 100644
index 0000000..29e8c73
--- /dev/null
+++ b/project/yocto/layers/meta-user/recipes-ros2/uncrustify-vendor/uncrustify-vendor_%.bbappend
@@ -0,0 +1,3 @@
+# CMake will git clone https://github.com/uncrustify/uncrustify.git during compile step.
+# Thus, network access during compile step is required.
+do_compile[network] = "1"