diff --git a/buildenv/docker/mkdocker.sh b/buildenv/docker/mkdocker.sh
index 9e5a34d21a9..09892916617 100644
--- a/buildenv/docker/mkdocker.sh
+++ b/buildenv/docker/mkdocker.sh
@@ -169,6 +169,10 @@ validate_options() {
             echo "CentOS version 6 is not supported on $arch" >&2
             exit 1
           fi
+          if [ $arch = x86_64 ] ; then
+            # Certificates are old on CentOS:6 so we can't expect wget to check.
+            wget_O="wget --progress=dot:mega --no-check-certificate -O"
+          fi
           ;;
         7)
           ;;
@@ -372,6 +376,7 @@ fi
   echo "    perl-devel \\"
   echo "    perl-ExtUtils-MakeMaker \\" # required by git
   echo "    perl-GD \\"
+  echo "    perl-IPC-Cmd \\" # required for openssl v3 compiles
   echo "    perl-libwww-perl \\"
   echo "    perl-Time-HiRes \\"
   echo "    systemtap-devel \\"
@@ -459,7 +464,9 @@ if [ $arch = x86_64 ] ; then
   echo " && $wget_O gettext.tar.gz http://ftp.gnu.org/gnu/gettext/gettext-$gettext_version.tar.gz \\"
   echo " && tar -xzf gettext.tar.gz \\"
   echo " && cd gettext-$gettext_version \\"
+if [ $version != 6 ] ; then
   echo " && ./autogen.sh --skip-gnulib \\"
+fi
   echo " && ./configure --disable-nls \\"
   echo " && make \\"
   echo " && make install \\"
diff --git a/buildenv/jenkins/variables/defaults.yml b/buildenv/jenkins/variables/defaults.yml
index f011f9c6a34..cf132a5d31a 100644
--- a/buildenv/jenkins/variables/defaults.yml
+++ b/buildenv/jenkins/variables/defaults.yml
@@ -297,8 +297,8 @@ x86-64_linux:
       8: 'ci.role.build && hw.arch.x86 && sw.tool.docker'
       11: 'ci.role.build && hw.arch.x86 && sw.tool.docker'
     docker_image:
-      8: 'eclipseopenj9/jenkins-agent-x86-centos6:16'
-      11: 'eclipseopenj9/jenkins-agent-x86-centos6:16'
+      8: 'eclipseopenj9/jenkins-agent-x86-centos6:24'
+      11: 'eclipseopenj9/jenkins-agent-x86-centos6:24'
   extra_configure_options:
     all: '--enable-jitserver'
   build_env: