diff --git a/Dockerfile b/Dockerfile
index 7b569e1..64f6717 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,6 +13,10 @@ RUN gpasswd -a www www
 WORKDIR ${_workroot}
 COPY entrypoint.sh uwsgi.ini wsgi.py ./
 COPY ext ./ext/
+# Github actions checkout won't sync these submodules recursively.
+RUN apt install -y git
+RUN git submodule add https://github.com/ibleaman/loshn-koydesh-pronunciation.git ext/yiddish/yiddish/submodules/loshn-koydesh-pronunciation
+RUN git submodule add  https://github.com/ibleaman/hasidify_lexicon.git yiddish/submodules/hasidify_lexicon
 COPY scriptshifter ./scriptshifter/
 
 COPY requirements.txt ./