diff --git a/docker/Dockerfile b/docker/Dockerfile
index 4729abf54f..95fa86a138 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -58,3 +58,4 @@ RUN apt-get -q update \
 # Copy over Zeek installation.
 COPY --from=build /usr/local/zeek /usr/local/zeek
 ENV PATH "/usr/local/zeek/bin:${PATH}"
+ENV PYTHONPATH "/usr/local/zeek/lib/zeek/python:${PYTHONPATH}"