diff --git a/.github/pyinstaller/pyinstaller.spec b/.github/pyinstaller/pyinstaller.spec
index bb3d0357..bbd72543 100644
--- a/.github/pyinstaller/pyinstaller.spec
+++ b/.github/pyinstaller/pyinstaller.spec
@@ -33,8 +33,6 @@ a = Analysis(
         # i.e. ./.github/pyinstaller
         ('../../rules', 'rules'),
 
-        ('rules', 'rules'),
-
         # capa.render.default uses tabulate that depends on wcwidth.
         # it seems wcwidth uses a json file `version.json`
         # and this doesn't get picked up by pyinstaller automatically.
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b2225d5a..107a8ad7 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -25,6 +25,8 @@ jobs:
     steps:
     - name: Checkout capa
       uses: actions/checkout@v2
+      with:
+        submodules: true
     - name: Set up Python 2.7
       uses: actions/setup-python@v2
       with: