diff --git a/projects/graphicsmagick/Dockerfile b/projects/graphicsmagick/Dockerfile
index 8869d1db5..d973e6809 100644
--- a/projects/graphicsmagick/Dockerfile
+++ b/projects/graphicsmagick/Dockerfile
@@ -16,7 +16,7 @@
 
 FROM gcr.io/oss-fuzz-base/base-builder
 MAINTAINER alex.gaynor@gmail.com
-RUN apt-get update && apt-get install -y mercurial automake autopoint cmake libtool nasm pkg-config
+RUN apt-get update && apt-get install -y mercurial automake autopoint cmake libtool nasm pkg-config po4a
 RUN hg clone --time -b default http://hg.code.sf.net/p/graphicsmagick/code graphicsmagick || \
     hg clone --time -b default http://hg.code.sf.net/p/graphicsmagick/code graphicsmagick || \
     hg clone --time -b default http://hg.code.sf.net/p/graphicsmagick/code graphicsmagick
diff --git a/projects/imagemagick/Dockerfile b/projects/imagemagick/Dockerfile
index f818b62dd..346e5fe60 100644
--- a/projects/imagemagick/Dockerfile
+++ b/projects/imagemagick/Dockerfile
@@ -18,7 +18,7 @@ FROM gcr.io/oss-fuzz-base/base-builder
 MAINTAINER paul.l.kehrer@gmail.com
 RUN dpkg --add-architecture i386 && \
     apt-get update && \
-    apt-get install -y make autoconf automake libtool pkg-config cmake nasm autopoint libc6:i386 libc6-dev:i386
+    apt-get install -y make autoconf automake libtool pkg-config cmake nasm autopoint po4a libc6:i386 libc6-dev:i386
 RUN git clone --depth 1 https://github.com/imagemagick/imagemagick
 RUN git clone --depth 1 https://gitlab.com/libtiff/libtiff
 RUN git clone --depth 1 https://github.com/strukturag/libde265