diff --git a/.docker/standalone.Dockerfile b/.docker/standalone.Dockerfile
index a4a4a19f1..137974ced 100644
--- a/.docker/standalone.Dockerfile
+++ b/.docker/standalone.Dockerfile
@@ -9,6 +9,7 @@ WORKDIR $HOME/everparse
 # CI dependencies: jq (to identify F* branch)
 RUN sudo apt-get update && sudo apt-get install -y --no-install-recommends \
     jq \
+    pkg-config \
     wget \
     && true