diff --git a/images/base/Dockerfile b/images/base/Dockerfile
index c9f6d22..f31f585 100644
--- a/images/base/Dockerfile
+++ b/images/base/Dockerfile
@@ -5,5 +5,5 @@ ENV DEBIAN_FRONTEND noninteractive
 RUN \
     apt-get -y update && \
     apt-get -y dist-upgrade && \
-    apt-get -y install build-essential yasm nasm pkg-config git curl wget cmake unzip subversion autoconf automake libtool cmake clang texinfo texi2html gperf libc6-dev && \
+    apt-get -y install build-essential yasm nasm pkg-config git curl wget cmake unzip subversion autoconf automake libtool cmake clang texinfo texi2html gperf ragel libc6-dev && \
     apt-get -y clean