diff --git a/2.5/alpine3.10/Dockerfile b/2.5/alpine3.10/Dockerfile
index 8bd783d13..6e6a73cac 100644
--- a/2.5/alpine3.10/Dockerfile
+++ b/2.5/alpine3.10/Dockerfile
@@ -12,8 +12,8 @@ RUN set -eux; \
 	} >> /usr/local/etc/gemrc
 
 ENV RUBY_MAJOR 2.5
-ENV RUBY_VERSION 2.5.6
-ENV RUBY_DOWNLOAD_SHA256 7601e4b83f4f17bc1affe091502dd465282ffba0761dea57c071ead21b132cee
+ENV RUBY_VERSION 2.5.7
+ENV RUBY_DOWNLOAD_SHA256 201870e8f58957d542233fef588b1d76f7bf962fea44dcbd2237f4a5899a3f95
 ENV RUBYGEMS_VERSION 3.0.3
 
 # some of ruby's build scripts are written in ruby
diff --git a/2.5/alpine3.9/Dockerfile b/2.5/alpine3.9/Dockerfile
index 8d93c9b46..8f47b1d86 100644
--- a/2.5/alpine3.9/Dockerfile
+++ b/2.5/alpine3.9/Dockerfile
@@ -12,8 +12,8 @@ RUN set -eux; \
 	} >> /usr/local/etc/gemrc
 
 ENV RUBY_MAJOR 2.5
-ENV RUBY_VERSION 2.5.6
-ENV RUBY_DOWNLOAD_SHA256 7601e4b83f4f17bc1affe091502dd465282ffba0761dea57c071ead21b132cee
+ENV RUBY_VERSION 2.5.7
+ENV RUBY_DOWNLOAD_SHA256 201870e8f58957d542233fef588b1d76f7bf962fea44dcbd2237f4a5899a3f95
 ENV RUBYGEMS_VERSION 3.0.3
 
 # some of ruby's build scripts are written in ruby
diff --git a/2.5/buster/Dockerfile b/2.5/buster/Dockerfile
index f4afef153..4c3f7cc26 100644
--- a/2.5/buster/Dockerfile
+++ b/2.5/buster/Dockerfile
@@ -9,8 +9,8 @@ RUN set -eux; \
 	} >> /usr/local/etc/gemrc
 
 ENV RUBY_MAJOR 2.5
-ENV RUBY_VERSION 2.5.6
-ENV RUBY_DOWNLOAD_SHA256 7601e4b83f4f17bc1affe091502dd465282ffba0761dea57c071ead21b132cee
+ENV RUBY_VERSION 2.5.7
+ENV RUBY_DOWNLOAD_SHA256 201870e8f58957d542233fef588b1d76f7bf962fea44dcbd2237f4a5899a3f95
 ENV RUBYGEMS_VERSION 3.0.3
 
 # some of ruby's build scripts are written in ruby
diff --git a/2.5/stretch/Dockerfile b/2.5/stretch/Dockerfile
index a0031ad1b..f613b2fae 100644
--- a/2.5/stretch/Dockerfile
+++ b/2.5/stretch/Dockerfile
@@ -9,8 +9,8 @@ RUN set -eux; \
 	} >> /usr/local/etc/gemrc
 
 ENV RUBY_MAJOR 2.5
-ENV RUBY_VERSION 2.5.6
-ENV RUBY_DOWNLOAD_SHA256 7601e4b83f4f17bc1affe091502dd465282ffba0761dea57c071ead21b132cee
+ENV RUBY_VERSION 2.5.7
+ENV RUBY_DOWNLOAD_SHA256 201870e8f58957d542233fef588b1d76f7bf962fea44dcbd2237f4a5899a3f95
 ENV RUBYGEMS_VERSION 3.0.3
 
 # some of ruby's build scripts are written in ruby