diff --git a/build/ci/Dockerfile b/build/ci/Dockerfile
index fd8ea40..26673c7 100644
--- a/build/ci/Dockerfile
+++ b/build/ci/Dockerfile
@@ -9,6 +9,7 @@ RUN DEBIAN_FRONTEND=noninteractive apt-get update \
 		python3-pyqt5 \
 		python3-pip \
 		zip \
+		sudo \
 	&& pip3 install whither
 
 VOLUME /build