diff --git a/docker-compose.yml b/docker-compose.yml
index 166f7f3..1d1f543 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -74,6 +74,7 @@ services:
           - INSTALL_MSSQL=${PHP_FPM_INSTALL_MSSQL}
           - INSTALL_ZIP_ARCHIVE=${PHP_FPM_INSTALL_ZIP_ARCHIVE}
           - INSTALL_BCMATH=${PHP_FPM_INSTALL_BCMATH}
+          - INSTALL_GMP=${PHP_FPM_INSTALL_GMP}
           - INSTALL_PHPREDIS=${PHP_FPM_INSTALL_PHPREDIS}
           - INSTALL_MEMCACHED=${PHP_FPM_INSTALL_MEMCACHED}
           - INSTALL_OPCACHE=${PHP_FPM_INSTALL_OPCACHE}
diff --git a/env-example b/env-example
index 5d5d73b..0eb282d 100644
--- a/env-example
+++ b/env-example
@@ -101,6 +101,7 @@ PHP_FPM_INSTALL_MSSQL=false
 PHP_FPM_INSTALL_SOAP=false
 PHP_FPM_INSTALL_ZIP_ARCHIVE=false
 PHP_FPM_INSTALL_BCMATH=false
+PHP_FPM_INSTALL_GMP=false
 PHP_FPM_INSTALL_PHPREDIS=false
 PHP_FPM_INSTALL_MEMCACHED=false
 PHP_FPM_INSTALL_OPCACHE=false
diff --git a/php-fpm/Dockerfile-56 b/php-fpm/Dockerfile-56
index 4678d8e..94726cc 100644
--- a/php-fpm/Dockerfile-56
+++ b/php-fpm/Dockerfile-56
@@ -156,6 +156,18 @@ RUN if [ ${INSTALL_BCMATH} = true ]; then \
     docker-php-ext-install bcmath \
 ;fi
 
+#####################################
+# GMP (GNU Multiple Precision):
+#####################################
+
+ARG INSTALL_GMP=false
+RUN if [ ${INSTALL_GMP} = true ]; then \
+    # Install the GMP extension
+	apt-get update -yqq && \
+	apt-get install -y libgmp-dev && \ 
+    docker-php-ext-install gmp \
+;fi
+
 #####################################
 # PHP Memcached:
 #####################################
diff --git a/php-fpm/Dockerfile-70 b/php-fpm/Dockerfile-70
index 8a8bbd4..aba8ce1 100644
--- a/php-fpm/Dockerfile-70
+++ b/php-fpm/Dockerfile-70
@@ -153,6 +153,18 @@ RUN if [ ${INSTALL_BCMATH} = true ]; then \
     docker-php-ext-install bcmath \
 ;fi
 
+#####################################
+# GMP (GNU Multiple Precision):
+#####################################
+
+ARG INSTALL_GMP=false
+RUN if [ ${INSTALL_GMP} = true ]; then \
+    # Install the GMP extension
+	apt-get update -yqq && \
+	apt-get install -y libgmp-dev && \ 
+    docker-php-ext-install gmp \
+;fi
+
 #####################################
 # PHP Memcached:
 #####################################
diff --git a/php-fpm/Dockerfile-71 b/php-fpm/Dockerfile-71
index 0b31f6d..2a164fb 100644
--- a/php-fpm/Dockerfile-71
+++ b/php-fpm/Dockerfile-71
@@ -153,6 +153,18 @@ RUN if [ ${INSTALL_BCMATH} = true ]; then \
     docker-php-ext-install bcmath \
 ;fi
 
+#####################################
+# GMP (GNU Multiple Precision):
+#####################################
+
+ARG INSTALL_GMP=false
+RUN if [ ${INSTALL_GMP} = true ]; then \
+    # Install the GMP extension
+	apt-get update -yqq && \
+	apt-get install -y libgmp-dev && \ 
+    docker-php-ext-install gmp \
+;fi
+
 #####################################
 # PHP Memcached:
 #####################################