diff --git a/2.3/alpine3.7/Dockerfile b/2.3/alpine3.7/Dockerfile
index 118f76046..1a9e4ab1d 100644
--- a/2.3/alpine3.7/Dockerfile
+++ b/2.3/alpine3.7/Dockerfile
@@ -1,5 +1,8 @@
 FROM alpine:3.7
 
+RUN apk add --no-cache \
+		gmp-dev
+
 # skip installing gem documentation
 RUN mkdir -p /usr/local/etc \
 	&& { \
@@ -28,7 +31,6 @@ RUN set -ex \
 		gcc \
 		gdbm-dev \
 		glib-dev \
-		gmp-dev \
 		libc-dev \
 		libffi-dev \
 		libxml2-dev \
diff --git a/2.3/alpine3.8/Dockerfile b/2.3/alpine3.8/Dockerfile
index 59e810506..4bc0ab1ad 100644
--- a/2.3/alpine3.8/Dockerfile
+++ b/2.3/alpine3.8/Dockerfile
@@ -1,5 +1,8 @@
 FROM alpine:3.8
 
+RUN apk add --no-cache \
+		gmp-dev
+
 # skip installing gem documentation
 RUN mkdir -p /usr/local/etc \
 	&& { \
@@ -28,7 +31,6 @@ RUN set -ex \
 		gcc \
 		gdbm-dev \
 		glib-dev \
-		gmp-dev \
 		libc-dev \
 		libffi-dev \
 		libxml2-dev \
diff --git a/2.3/jessie/slim/Dockerfile b/2.3/jessie/slim/Dockerfile
index 6605ade07..7748b65ac 100644
--- a/2.3/jessie/slim/Dockerfile
+++ b/2.3/jessie/slim/Dockerfile
@@ -6,6 +6,7 @@ RUN apt-get update \
 		ca-certificates \
 		libffi-dev \
 		libgdbm3 \
+		libgmp-dev \
 		libssl-dev \
 		libyaml-dev \
 		procps \
@@ -37,7 +38,6 @@ RUN set -ex \
 		libbz2-dev \
 		libgdbm-dev \
 		libglib2.0-dev \
-		libgmp-dev \
 		libncurses-dev \
 		libreadline-dev \
 		libxml2-dev \
diff --git a/2.3/stretch/slim/Dockerfile b/2.3/stretch/slim/Dockerfile
index 365f2faf7..eea5ed4a6 100644
--- a/2.3/stretch/slim/Dockerfile
+++ b/2.3/stretch/slim/Dockerfile
@@ -6,6 +6,7 @@ RUN apt-get update \
 		ca-certificates \
 		libffi-dev \
 		libgdbm3 \
+		libgmp-dev \
 		libssl1.0-dev \
 		libyaml-dev \
 		procps \
@@ -37,7 +38,6 @@ RUN set -ex \
 		libbz2-dev \
 		libgdbm-dev \
 		libglib2.0-dev \
-		libgmp-dev \
 		libncurses-dev \
 		libreadline-dev \
 		libxml2-dev \
diff --git a/2.4/alpine3.8/Dockerfile b/2.4/alpine3.8/Dockerfile
index 92779e404..feb58701a 100644
--- a/2.4/alpine3.8/Dockerfile
+++ b/2.4/alpine3.8/Dockerfile
@@ -1,5 +1,8 @@
 FROM alpine:3.8
 
+RUN apk add --no-cache \
+		gmp-dev
+
 # skip installing gem documentation
 RUN mkdir -p /usr/local/etc \
 	&& { \
@@ -28,7 +31,6 @@ RUN set -ex \
 		gcc \
 		gdbm-dev \
 		glib-dev \
-		gmp-dev \
 		libc-dev \
 		libffi-dev \
 		libxml2-dev \
diff --git a/2.4/alpine3.9/Dockerfile b/2.4/alpine3.9/Dockerfile
index 6ce8f4b06..60d56dc10 100644
--- a/2.4/alpine3.9/Dockerfile
+++ b/2.4/alpine3.9/Dockerfile
@@ -1,5 +1,8 @@
 FROM alpine:3.9
 
+RUN apk add --no-cache \
+		gmp-dev
+
 # skip installing gem documentation
 RUN mkdir -p /usr/local/etc \
 	&& { \
@@ -28,7 +31,6 @@ RUN set -ex \
 		gcc \
 		gdbm-dev \
 		glib-dev \
-		gmp-dev \
 		libc-dev \
 		libffi-dev \
 		libxml2-dev \
diff --git a/2.4/jessie/slim/Dockerfile b/2.4/jessie/slim/Dockerfile
index 49ee44bd2..6b59a2346 100644
--- a/2.4/jessie/slim/Dockerfile
+++ b/2.4/jessie/slim/Dockerfile
@@ -6,6 +6,7 @@ RUN apt-get update \
 		ca-certificates \
 		libffi-dev \
 		libgdbm3 \
+		libgmp-dev \
 		libssl-dev \
 		libyaml-dev \
 		procps \
@@ -37,7 +38,6 @@ RUN set -ex \
 		libbz2-dev \
 		libgdbm-dev \
 		libglib2.0-dev \
-		libgmp-dev \
 		libncurses-dev \
 		libreadline-dev \
 		libxml2-dev \
diff --git a/2.4/stretch/slim/Dockerfile b/2.4/stretch/slim/Dockerfile
index 34c9e302c..c48601e88 100644
--- a/2.4/stretch/slim/Dockerfile
+++ b/2.4/stretch/slim/Dockerfile
@@ -6,6 +6,7 @@ RUN apt-get update \
 		ca-certificates \
 		libffi-dev \
 		libgdbm3 \
+		libgmp-dev \
 		libssl-dev \
 		libyaml-dev \
 		procps \
@@ -37,7 +38,6 @@ RUN set -ex \
 		libbz2-dev \
 		libgdbm-dev \
 		libglib2.0-dev \
-		libgmp-dev \
 		libncurses-dev \
 		libreadline-dev \
 		libxml2-dev \
diff --git a/2.5/alpine3.8/Dockerfile b/2.5/alpine3.8/Dockerfile
index 50dce149d..965b74a3f 100644
--- a/2.5/alpine3.8/Dockerfile
+++ b/2.5/alpine3.8/Dockerfile
@@ -1,5 +1,8 @@
 FROM alpine:3.8
 
+RUN apk add --no-cache \
+		gmp-dev
+
 # skip installing gem documentation
 RUN mkdir -p /usr/local/etc \
 	&& { \
@@ -28,7 +31,6 @@ RUN set -ex \
 		gcc \
 		gdbm-dev \
 		glib-dev \
-		gmp-dev \
 		libc-dev \
 		libffi-dev \
 		libxml2-dev \
diff --git a/2.5/alpine3.9/Dockerfile b/2.5/alpine3.9/Dockerfile
index ccf57d9a9..130dd109c 100644
--- a/2.5/alpine3.9/Dockerfile
+++ b/2.5/alpine3.9/Dockerfile
@@ -1,5 +1,8 @@
 FROM alpine:3.9
 
+RUN apk add --no-cache \
+		gmp-dev
+
 # skip installing gem documentation
 RUN mkdir -p /usr/local/etc \
 	&& { \
@@ -28,7 +31,6 @@ RUN set -ex \
 		gcc \
 		gdbm-dev \
 		glib-dev \
-		gmp-dev \
 		libc-dev \
 		libffi-dev \
 		libxml2-dev \
diff --git a/2.5/stretch/slim/Dockerfile b/2.5/stretch/slim/Dockerfile
index 255b02db5..ccd90b43d 100644
--- a/2.5/stretch/slim/Dockerfile
+++ b/2.5/stretch/slim/Dockerfile
@@ -6,6 +6,7 @@ RUN apt-get update \
 		ca-certificates \
 		libffi-dev \
 		libgdbm3 \
+		libgmp-dev \
 		libssl-dev \
 		libyaml-dev \
 		procps \
@@ -37,7 +38,6 @@ RUN set -ex \
 		libbz2-dev \
 		libgdbm-dev \
 		libglib2.0-dev \
-		libgmp-dev \
 		libncurses-dev \
 		libreadline-dev \
 		libxml2-dev \
diff --git a/2.6/alpine3.8/Dockerfile b/2.6/alpine3.8/Dockerfile
index 4bb66c7ca..73457f3c9 100644
--- a/2.6/alpine3.8/Dockerfile
+++ b/2.6/alpine3.8/Dockerfile
@@ -1,5 +1,8 @@
 FROM alpine:3.8
 
+RUN apk add --no-cache \
+		gmp-dev
+
 # skip installing gem documentation
 RUN mkdir -p /usr/local/etc \
 	&& { \
@@ -27,7 +30,6 @@ RUN set -ex \
 		gcc \
 		gdbm-dev \
 		glib-dev \
-		gmp-dev \
 		libc-dev \
 		libffi-dev \
 		libxml2-dev \
diff --git a/2.6/alpine3.9/Dockerfile b/2.6/alpine3.9/Dockerfile
index 72826da6b..5bb07bce8 100644
--- a/2.6/alpine3.9/Dockerfile
+++ b/2.6/alpine3.9/Dockerfile
@@ -1,5 +1,8 @@
 FROM alpine:3.9
 
+RUN apk add --no-cache \
+		gmp-dev
+
 # skip installing gem documentation
 RUN mkdir -p /usr/local/etc \
 	&& { \
@@ -27,7 +30,6 @@ RUN set -ex \
 		gcc \
 		gdbm-dev \
 		glib-dev \
-		gmp-dev \
 		libc-dev \
 		libffi-dev \
 		libxml2-dev \
diff --git a/2.6/stretch/slim/Dockerfile b/2.6/stretch/slim/Dockerfile
index 438bc8f4d..d992e2cbf 100644
--- a/2.6/stretch/slim/Dockerfile
+++ b/2.6/stretch/slim/Dockerfile
@@ -6,6 +6,7 @@ RUN apt-get update \
 		ca-certificates \
 		libffi-dev \
 		libgdbm3 \
+		libgmp-dev \
 		libssl-dev \
 		libyaml-dev \
 		procps \
@@ -36,7 +37,6 @@ RUN set -ex \
 		libbz2-dev \
 		libgdbm-dev \
 		libglib2.0-dev \
-		libgmp-dev \
 		libncurses-dev \
 		libreadline-dev \
 		libxml2-dev \
diff --git a/Dockerfile-alpine.template b/Dockerfile-alpine.template
index 7a07b247f..75bc220aa 100644
--- a/Dockerfile-alpine.template
+++ b/Dockerfile-alpine.template
@@ -1,5 +1,8 @@
 FROM alpine:%%PLACEHOLDER%%
 
+RUN apk add --no-cache \
+		gmp-dev
+
 # skip installing gem documentation
 RUN mkdir -p /usr/local/etc \
 	&& { \
@@ -28,7 +31,6 @@ RUN set -ex \
 		gcc \
 		gdbm-dev \
 		glib-dev \
-		gmp-dev \
 		libc-dev \
 		libffi-dev \
 		libxml2-dev \
diff --git a/Dockerfile-slim.template b/Dockerfile-slim.template
index 2fde2d1b3..ccbe8b728 100644
--- a/Dockerfile-slim.template
+++ b/Dockerfile-slim.template
@@ -6,6 +6,7 @@ RUN apt-get update \
 		ca-certificates \
 		libffi-dev \
 		libgdbm3 \
+		libgmp-dev \
 		libssl-dev \
 		libyaml-dev \
 		procps \
@@ -37,7 +38,6 @@ RUN set -ex \
 		libbz2-dev \
 		libgdbm-dev \
 		libglib2.0-dev \
-		libgmp-dev \
 		libncurses-dev \
 		libreadline-dev \
 		libxml2-dev \