diff --git a/apache-php7/Dockerfile b/apache-php7/Dockerfile
index 67a1d2d..4aa2691 100755
--- a/apache-php7/Dockerfile
+++ b/apache-php7/Dockerfile
@@ -5,10 +5,11 @@ MAINTAINER Michael Babker <michael.babker@joomla.org> (@mbabker)
 RUN a2enmod rewrite
 
 # Install PHP extensions
-RUN apt-get update && apt-get install -y libpng12-dev libjpeg-dev zip unzip && rm -rf /var/lib/apt/lists/* \
+RUN apt-get update && apt-get install -y libpng12-dev libjpeg-dev libmcrypt-dev zip unzip && rm -rf /var/lib/apt/lists/* \
 	&& docker-php-ext-configure gd --with-png-dir=/usr --with-jpeg-dir=/usr \
 	&& docker-php-ext-install gd
 RUN docker-php-ext-install mysqli
+RUN docker-php-ext-install mcrypt
 
 VOLUME /var/www/html
 
diff --git a/apache/Dockerfile b/apache/Dockerfile
index 9952ac3..62f9381 100755
--- a/apache/Dockerfile
+++ b/apache/Dockerfile
@@ -5,10 +5,11 @@ MAINTAINER Michael Babker <michael.babker@joomla.org> (@mbabker)
 RUN a2enmod rewrite
 
 # Install PHP extensions
-RUN apt-get update && apt-get install -y libpng12-dev libjpeg-dev zip unzip && rm -rf /var/lib/apt/lists/* \
+RUN apt-get update && apt-get install -y libpng12-dev libjpeg-dev libmcrypt-dev zip unzip && rm -rf /var/lib/apt/lists/* \
 	&& docker-php-ext-configure gd --with-png-dir=/usr --with-jpeg-dir=/usr \
 	&& docker-php-ext-install gd
 RUN docker-php-ext-install mysqli
+RUN docker-php-ext-install mcrypt
 
 VOLUME /var/www/html
 
diff --git a/fpm-php7/Dockerfile b/fpm-php7/Dockerfile
index c32eb9f..887ea3f 100755
--- a/fpm-php7/Dockerfile
+++ b/fpm-php7/Dockerfile
@@ -2,10 +2,11 @@ FROM php:7.0-fpm
 MAINTAINER Michael Babker <michael.babker@joomla.org> (@mbabker)
 
 # Install PHP extensions
-RUN apt-get update && apt-get install -y libpng12-dev libjpeg-dev zip unzip && rm -rf /var/lib/apt/lists/* \
+RUN apt-get update && apt-get install -y libpng12-dev libjpeg-dev libmcrypt-dev zip unzip && rm -rf /var/lib/apt/lists/* \
 	&& docker-php-ext-configure gd --with-png-dir=/usr --with-jpeg-dir=/usr \
 	&& docker-php-ext-install gd
 RUN docker-php-ext-install mysqli
+RUN docker-php-ext-install mcrypt
 
 VOLUME /var/www/html
 
diff --git a/fpm/Dockerfile b/fpm/Dockerfile
index a547fae..84553ff 100755
--- a/fpm/Dockerfile
+++ b/fpm/Dockerfile
@@ -2,10 +2,11 @@ FROM php:5.6-fpm
 MAINTAINER Michael Babker <michael.babker@joomla.org> (@mbabker)
 
 # Install PHP extensions
-RUN apt-get update && apt-get install -y libpng12-dev libjpeg-dev zip unzip && rm -rf /var/lib/apt/lists/* \
+RUN apt-get update && apt-get install -y libpng12-dev libjpeg-dev libmcrypt-dev zip unzip && rm -rf /var/lib/apt/lists/* \
 	&& docker-php-ext-configure gd --with-png-dir=/usr --with-jpeg-dir=/usr \
 	&& docker-php-ext-install gd
 RUN docker-php-ext-install mysqli
+RUN docker-php-ext-install mcrypt
 
 VOLUME /var/www/html