diff --git a/docker/base/Dockerfile.j2 b/docker/base/Dockerfile.j2
index ceb51a94b9..91f3adce7b 100644
--- a/docker/base/Dockerfile.j2
+++ b/docker/base/Dockerfile.j2
@@ -148,6 +148,7 @@ RUN yum install -y \
         python-webtest \
         python-werkzeug \
         python-wsme \
+        which \
     && yum clean all
 
     # Endif for install_type binary
@@ -174,6 +175,7 @@ RUN yum update -y \
         python-oslo-policy \
         sqlite-devel \
         tar \
+        which \
     && yum clean all
 
     # Endif for install_type source