diff --git a/.github/images/centos.Dockerfile b/.github/images/centos.Dockerfile
index b0444ad..2fbb211 100644
--- a/.github/images/centos.Dockerfile
+++ b/.github/images/centos.Dockerfile
@@ -4,7 +4,7 @@ FROM $image
 # Install dependencies
 RUN yum update -y
 RUN yum groupinstall -y 'Development Tools'
-RUN yum install -y autoconf automake findutils
+RUN yum install -y autoconf automake findutils libtool
 
 # Add source code
 ADD . /src
diff --git a/.github/images/debian.Dockerfile b/.github/images/debian.Dockerfile
index 59f9c47..2882083 100644
--- a/.github/images/debian.Dockerfile
+++ b/.github/images/debian.Dockerfile
@@ -7,7 +7,10 @@ RUN apt-get update && apt-get install -y locales && rm -rf /var/lib/apt/lists/*
 ENV LANG en_US.utf8
 
 # Install dependencies
-RUN apt-get update && apt-get dist-upgrade -y && apt-get install -y build-essential autoconf automake markdown && rm -rf /var/lib/apt/lists/*
+RUN apt-get update \
+    && apt-get dist-upgrade -y \
+    && apt-get install -y build-essential autoconf libtool automake markdown \
+    && rm -rf /var/lib/apt/lists/*
 
 # Add source code
 ADD . /src