diff --git a/Dockerfile b/Dockerfile
index e010cf2..f1360a2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,6 +14,7 @@ RUN set -eux && \
         vim \
         git \
         man \
+        less \
     && \
     rm -rf /var/lib/apt/lists/* && \
     rm /etc/ssh/ssh_host_*key* && \