diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6129f27..37b3f1f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 
 ## [Unreleased]
+### Added
+- MUF and foF2 maps from [prop.kc2g.com](https://prop.kc2g.com/).
 ### Changed
 - New colour theme for `?greyline`.
 - Moved great circle distance and bearing calculation from `?ungrid` to `?griddistance`.
diff --git a/Dockerfile b/Dockerfile
index 0690c44..9d52058 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,6 +14,9 @@ RUN \
         libxml2-dev \
         libxslt-dev \
         libressl-dev \
+        libffi-dev \
+        jpeg-dev \
+        zlib-dev \
         python3-dev && \
     echo "**** install runtime packages ****" && \
     apk add --no-cache \