diff --git a/Dockerfile.omnibus-gitlab-bionic b/Dockerfile.omnibus-gitlab-bionic
index 790beab..96c556c 100644
--- a/Dockerfile.omnibus-gitlab-bionic
+++ b/Dockerfile.omnibus-gitlab-bionic
@@ -1,7 +1,7 @@
 FROM ubuntu:18.04
 
 RUN apt-get update -q \
-        && apt-get install -y g++-6 gcc-6 git make curl zlib1g-dev libssl1.0-dev locales \
+        && apt-get install -y g++ gcc git make curl zlib1g-dev libssl1.0-dev locales \
         && rm -rf /var/lib/apt/lists/*
 
 RUN echo "en_US.UTF-8 UTF-8" > /etc/locale.gen
@@ -9,13 +9,11 @@ RUN locale-gen en_US.UTF-8
 ENV LANG en_US.UTF-8
 ENV LANGUAGE en_US:en
 ENV LC_ALL en_US.UTF-8
-ENV CC /usr/bin/gcc-6
-ENV CXX /usr/bin/g++-6
 
-ENV RUBY_VERSION 2.3.7
-RUN curl -fsSL "https://cache.ruby-lang.org/pub/ruby/2.3/ruby-${RUBY_VERSION}.tar.gz" \
+ENV RUBY_VERSION 2.4.4
+RUN curl -fsSL "https://cache.ruby-lang.org/pub/ruby/2.4/ruby-${RUBY_VERSION}.tar.gz" \
   | tar -xzC /tmp \
-  && cd /tmp/ruby-2.3.7 \
+  && cd /tmp/ruby-2.4.4 \
   && ./configure --disable-install-rdoc --disable-install-doc --disable-install-capi\
   && make \
   && make install
diff --git a/Dockerfile.omnibus-gitlab-centos6 b/Dockerfile.omnibus-gitlab-centos6
index 4c3e027..88900e1 100644
--- a/Dockerfile.omnibus-gitlab-centos6
+++ b/Dockerfile.omnibus-gitlab-centos6
@@ -9,10 +9,10 @@ ENV LANG en_US.UTF-8
 ENV LC_ALL en_US.UTF-8
 RUN localedef -c -f UTF-8 -i en_US en_US.UTF-8
 
-ENV RUBY_VERSION 2.3.7
-RUN curl -fsSL "https://cache.ruby-lang.org/pub/ruby/2.3/ruby-${RUBY_VERSION}.tar.gz" \
+ENV RUBY_VERSION 2.4.4
+RUN curl -fsSL "https://cache.ruby-lang.org/pub/ruby/2.4/ruby-${RUBY_VERSION}.tar.gz" \
   | tar -xzC /tmp \
-  && cd /tmp/ruby-2.3.7 \
+  && cd /tmp/ruby-2.4.4 \
   && ./configure --disable-install-rdoc --disable-install-doc --disable-install-capi\
   && make \
   && make install
diff --git a/Dockerfile.omnibus-gitlab-centos7 b/Dockerfile.omnibus-gitlab-centos7
index c5616d7..283490f 100644
--- a/Dockerfile.omnibus-gitlab-centos7
+++ b/Dockerfile.omnibus-gitlab-centos7
@@ -9,10 +9,10 @@ ENV LANG en_US.UTF-8
 ENV LC_ALL en_US.UTF-8
 RUN localedef -c -f UTF-8 -i en_US en_US.UTF-8
 
-ENV RUBY_VERSION 2.3.7
-RUN curl -fsSL "https://cache.ruby-lang.org/pub/ruby/2.3/ruby-${RUBY_VERSION}.tar.gz" \
+ENV RUBY_VERSION 2.4.4
+RUN curl -fsSL "https://cache.ruby-lang.org/pub/ruby/2.4/ruby-${RUBY_VERSION}.tar.gz" \
   | tar -xzC /tmp \
-  && cd /tmp/ruby-2.3.7 \
+  && cd /tmp/ruby-2.4.4 \
   && ./configure --disable-install-rdoc --disable-install-doc --disable-install-capi\
   && make \
   && make install
diff --git a/Dockerfile.omnibus-gitlab-jessie b/Dockerfile.omnibus-gitlab-jessie
index fef114f..2eed770 100644
--- a/Dockerfile.omnibus-gitlab-jessie
+++ b/Dockerfile.omnibus-gitlab-jessie
@@ -10,10 +10,10 @@ ENV LANG en_US.UTF-8
 ENV LANGUAGE en_US:en
 ENV LC_ALL en_US.UTF-8
 
-ENV RUBY_VERSION 2.3.7
-RUN curl -fsSL "https://cache.ruby-lang.org/pub/ruby/2.3/ruby-${RUBY_VERSION}.tar.gz" \
+ENV RUBY_VERSION 2.4.4
+RUN curl -fsSL "https://cache.ruby-lang.org/pub/ruby/2.4/ruby-${RUBY_VERSION}.tar.gz" \
   | tar -xzC /tmp \
-  && cd /tmp/ruby-2.3.7 \
+  && cd /tmp/ruby-2.4.4 \
   && ./configure --disable-install-rdoc --disable-install-doc --disable-install-capi\
   && make \
   && make install
diff --git a/Dockerfile.omnibus-gitlab-opensuse42.3 b/Dockerfile.omnibus-gitlab-opensuse42.3
index 44f8604..e2cbc4e 100644
--- a/Dockerfile.omnibus-gitlab-opensuse42.3
+++ b/Dockerfile.omnibus-gitlab-opensuse42.3
@@ -10,10 +10,10 @@ ENV LC_ALL en_US.UTF-8
 ENV LANGUAGE en_US:en
 RUN localedef -i en_US -f UTF-8 en_US.UTF-8
 
-ENV RUBY_VERSION 2.3.7
-RUN curl -fsSL "https://cache.ruby-lang.org/pub/ruby/2.3/ruby-${RUBY_VERSION}.tar.gz" \
+ENV RUBY_VERSION 2.4.4
+RUN curl -fsSL "https://cache.ruby-lang.org/pub/ruby/2.4/ruby-${RUBY_VERSION}.tar.gz" \
   | tar -xzC /tmp \
-  && cd /tmp/ruby-2.3.7 \
+  && cd /tmp/ruby-2.4.4 \
   && ./configure --disable-install-rdoc --disable-install-doc --disable-install-capi\
   && make \
   && make install
diff --git a/Dockerfile.omnibus-gitlab-stretch b/Dockerfile.omnibus-gitlab-stretch
index b5ac055..121b452 100644
--- a/Dockerfile.omnibus-gitlab-stretch
+++ b/Dockerfile.omnibus-gitlab-stretch
@@ -11,10 +11,10 @@ ENV LANGUAGE en_US:en
 ENV LC_ALL en_US.UTF-8
 
 
-ENV RUBY_VERSION 2.3.7
-RUN curl -fsSL "https://cache.ruby-lang.org/pub/ruby/2.3/ruby-${RUBY_VERSION}.tar.gz" \
+ENV RUBY_VERSION 2.4.4
+RUN curl -fsSL "https://cache.ruby-lang.org/pub/ruby/2.4/ruby-${RUBY_VERSION}.tar.gz" \
   | tar -xzC /tmp \
-  && cd /tmp/ruby-2.3.7 \
+  && cd /tmp/ruby-2.4.4 \
   && ./configure --disable-install-rdoc --disable-install-doc --disable-install-capi\
   && make \
   && make install
diff --git a/Dockerfile.omnibus-gitlab-trusty b/Dockerfile.omnibus-gitlab-trusty
index 037f41e..a090c32 100644
--- a/Dockerfile.omnibus-gitlab-trusty
+++ b/Dockerfile.omnibus-gitlab-trusty
@@ -4,10 +4,10 @@ RUN apt-get update -q \
         && apt-get install -y g++ gcc git make curl zlib1g-dev libssl-dev \
         && rm -rf /var/lib/apt/lists/*
 
-ENV RUBY_VERSION 2.3.7
-RUN curl -fsSL "https://cache.ruby-lang.org/pub/ruby/2.3/ruby-${RUBY_VERSION}.tar.gz" \
+ENV RUBY_VERSION 2.4.4
+RUN curl -fsSL "https://cache.ruby-lang.org/pub/ruby/2.4/ruby-${RUBY_VERSION}.tar.gz" \
   | tar -xzC /tmp \
-  && cd /tmp/ruby-2.3.7 \
+  && cd /tmp/ruby-2.4.4 \
   && ./configure --disable-install-rdoc --disable-install-doc --disable-install-capi\
   && make \
   && make install
diff --git a/Dockerfile.omnibus-gitlab-wheezy b/Dockerfile.omnibus-gitlab-wheezy
index 75657b4..17bfc32 100644
--- a/Dockerfile.omnibus-gitlab-wheezy
+++ b/Dockerfile.omnibus-gitlab-wheezy
@@ -10,10 +10,10 @@ ENV LANG en_US.UTF-8
 ENV LANGUAGE en_US:en
 ENV LC_ALL en_US.UTF-8
 
-ENV RUBY_VERSION 2.3.7
-RUN curl -fsSL "https://cache.ruby-lang.org/pub/ruby/2.3/ruby-${RUBY_VERSION}.tar.gz" \
+ENV RUBY_VERSION 2.4.4
+RUN curl -fsSL "https://cache.ruby-lang.org/pub/ruby/2.4/ruby-${RUBY_VERSION}.tar.gz" \
   | tar -xzC /tmp \
-  && cd /tmp/ruby-2.3.7 \
+  && cd /tmp/ruby-2.4.4 \
   && ./configure --disable-install-rdoc --disable-install-doc --disable-install-capi\
   && make \
   && make install
diff --git a/Dockerfile.omnibus-gitlab-xenial b/Dockerfile.omnibus-gitlab-xenial
index 92f02da..026c866 100644
--- a/Dockerfile.omnibus-gitlab-xenial
+++ b/Dockerfile.omnibus-gitlab-xenial
@@ -10,10 +10,10 @@ ENV LANG en_US.UTF-8
 ENV LANGUAGE en_US:en
 ENV LC_ALL en_US.UTF-8
 
-ENV RUBY_VERSION 2.3.7
-RUN curl -fsSL "https://cache.ruby-lang.org/pub/ruby/2.3/ruby-${RUBY_VERSION}.tar.gz" \
+ENV RUBY_VERSION 2.4.4
+RUN curl -fsSL "https://cache.ruby-lang.org/pub/ruby/2.4/ruby-${RUBY_VERSION}.tar.gz" \
   | tar -xzC /tmp \
-  && cd /tmp/ruby-2.3.7 \
+  && cd /tmp/ruby-2.4.4 \
   && ./configure --disable-install-rdoc --disable-install-doc --disable-install-capi\
   && make \
   && make install