diff --git a/v7.2/Dockerfile b/v7.2/Dockerfile
index 1c6d343..ae45344 100644
--- a/v7.2/Dockerfile
+++ b/v7.2/Dockerfile
@@ -2,15 +2,16 @@ FROM php:7.2-alpine
 
 RUN apk update && apk add --no-cache $PHPIZE_DEPS
 RUN apk add --no-cache zlib-dev gd-dev libwebp-dev freetype-dev libpng-dev libjpeg-turbo-dev \
-    curl
+    curl gmp-dev
 RUN docker-php-ext-configure gd --with-freetype-dir=/usr/include/ \
         --with-jpeg-dir=/usr/include/ \
         --with-png-dir=/usr/include/ \
         --with-webp-dir=/usr/include/ \
-    && docker-php-ext-install gd \
-    && docker-php-ext-configure bcmath && docker-php-ext-install bcmath \
-    && docker-php-ext-install zip \
-    && pecl install xdebug && docker-php-ext-enable xdebug
+    && docker-php-ext-install gd
+RUN docker-php-ext-configure bcmath && docker-php-ext-install bcmath
+RUN docker-php-ext-install zip 
+RUN docker-php-ext-install gmp
+RUN pecl install xdebug && docker-php-ext-enable xdebug
 
 # Install composer
 RUN curl -sS https://getcomposer.org/installer | php -- \
diff --git a/v7.3/Dockerfile b/v7.3/Dockerfile
index e4b00c2..77a43b7 100644
--- a/v7.3/Dockerfile
+++ b/v7.3/Dockerfile
@@ -2,15 +2,16 @@ FROM php:7.3-alpine
 
 RUN apk update && apk add --no-cache $PHPIZE_DEPS
 RUN apk add --no-cache zlib-dev gd-dev libwebp-dev freetype-dev libpng-dev libjpeg-turbo-dev \
-    curl zip libzip-dev
+    curl zip libzip-dev gmp-dev
 RUN docker-php-ext-configure gd --with-freetype-dir=/usr/include/ \
         --with-jpeg-dir=/usr/include/ \
         --with-png-dir=/usr/include/ \
         --with-webp-dir=/usr/include/ \
-    && docker-php-ext-install gd \
-    && docker-php-ext-configure bcmath && docker-php-ext-install bcmath \
-    && docker-php-ext-configure zip --with-libzip && docker-php-ext-install zip \
-    && pecl install xdebug && docker-php-ext-enable xdebug
+    && docker-php-ext-install gd
+RUN docker-php-ext-configure bcmath && docker-php-ext-install bcmath
+RUN docker-php-ext-configure zip --with-libzip && docker-php-ext-install zip
+RUN docker-php-ext-install gmp
+RUN pecl install xdebug && docker-php-ext-enable xdebug
 
 # Install composer
 RUN curl -sS https://getcomposer.org/installer | php -- \