diff --git a/Dockerfile b/Dockerfile
index 8a44a2389d7a8c19489249dbe0b3157aa17f4658..29a4ad4b8ba264c435e92d9627b90b11f515e341 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -24,7 +24,7 @@ RUN apk update && \
       make \
       plantuml \
       py3-pip \
-      qpdf
+      qpdf \
       freetype \
       fontconfig \
       gnupg \
@@ -34,7 +34,7 @@ RUN apk update && \
       tar \
       wget \
       xz
-      
+
 # DANGER: this will vary for different distributions, particularly the
 # `linuxmusl` suffix.  Alpine linux is a musl libc based distribution, for other
 # "more common" distributions, you likely want just `-linux` suffix rather than