diff --git a/Dockerfile b/Dockerfile
index 669774f..83d099e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,6 +14,8 @@ RUN apt update && \
         wget && \
     rm -rf /var/lib/apt/lists/*
 
+RUN pip3 install freetype
+
 RUN mkdir -p /opt/arm && \
     cd /opt/arm && \
     wget -O- https://developer.arm.com/-/media/Files/downloads/gnu-rm/8-2019q3/RC1.1/gcc-arm-none-eabi-8-2019-q3-update-linux.tar.bz2 | tar -xj