diff --git a/dependencies/build.py b/dependencies/build.py
index d300e4b3..96e18b2e 100755
--- a/dependencies/build.py
+++ b/dependencies/build.py
@@ -230,6 +230,13 @@ def is_tool(name):
 
 print('Building kipr-scratch...')
 kipr_scratch_path = working_dir / 'kipr-scratch'
+
+subprocess.run(
+  [ git, submodule, update, --init ],
+  cwd = kipr_scratch_path / 'libwallaby',
+  check = True
+)
+
 subprocess.run(
   [ python, kipr_scratch_path / 'build.py' ],
   cwd = kipr_scratch_path,