diff --git a/bin/assert-no-changes.sh b/bin/assert-no-changes.sh
index 252a644..5abb859 100755
--- a/bin/assert-no-changes.sh
+++ b/bin/assert-no-changes.sh
@@ -9,6 +9,7 @@ for proto in $(find ./rbproto -iname '*.proto'); do
 		protoc -I=./rbproto --python_out=./rbproto/python --pyi_out=./rbproto/python ./rbproto/shot.proto
     yarn pbjs ./rbproto/shot.proto --ts ./rbproto/ts/shot.ts
 done
+black rbproto/python
 prettier ./rbproto --write
 
 git ls-files | xargs md5sum > after.txt