diff --git a/dockerfiles/xenial.docker b/dockerfiles/xenial.docker
index 3d186631a60550d64ad07affa97e27941302e663..d67a00bbe525e37890d3a8d997e5ace279814b10 100644
--- a/dockerfiles/xenial.docker
+++ b/dockerfiles/xenial.docker
@@ -22,7 +22,7 @@ RUN apt-get update && \
     apt-get install -y libncurses5-dev && \
     apt-get install -y linux-headers-generic && \
     apt-get install -y graphviz && \
-    apt-get install -y clang && \
+    apt-get install -y clang-6.0 && \
     apt-get install -y libhdf5-dev && \
     apt-get install -y liblua5.2-dev && \
     apt-get install -y python-sphinx && \