diff --git a/build/docker/ubuntu-bionic/Dockerfile b/build/docker/ubuntu-bionic/Dockerfile
index 98f2607..291aa5d 100644
--- a/build/docker/ubuntu-bionic/Dockerfile
+++ b/build/docker/ubuntu-bionic/Dockerfile
@@ -179,7 +179,8 @@
 # Test dependencies for running puppeteer
 RUN apt-get install -y --no-install-recommends \
 `# JS dependencies` \
-      libxss1
+      libxss1 \
+      libxtst6
 
 RUN apt-get install -y --no-install-recommends \
 `# OCaml dependencies` \