diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 7c6f5c2e9ed..46c7ed078f7 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -44,7 +44,7 @@ variables:
   # Major version dictates which branches share the same ccache. E.g. 10.6-abc
   # and 10.6-xyz will have the same cache.
   MARIADB_MAJOR_VERSION: "10.5"
-  # NOTE! Currently ccache is only used on the Centos8 build. As each job has
+  # NOTE! Currently ccache is only used on the Centos 9 build. As each job has
   # sufficiently different environments they are unable to benefit from each
   # other's ccaches. As each build generates about 1 GB of ccache, having
   # multiple caches would quickly consume all free storage on Gitlab-CI and
@@ -53,7 +53,7 @@ variables:
   # cache:policy are not flexible enough to have a system where the cache is
   # uploaded only once a week and not on every build. Having ccache on at least
   # one build still helps ensure that ccache compatibility is at least tested
-  # and if the Centos 8 build is always significantly faster than all other
+  # and if the Centos 9 build is always significantly faster than all other
   # builds (e.g. on self-hosted Gitlab instances) then users would at least be
   # able to discover it.
   #
@@ -209,26 +209,20 @@ fedora-sanitizer:
     matrix:
       - SANITIZER: [-DWITH_ASAN=YES, -DWITH_TSAN=YES, -DWITH_UBSAN=YES]
 
-centos8:
+centos9:
   stage: build
-  image: quay.io/centos/centos:stream8 # CentOS 8 is deprecated, use this Stream8 instead
+  image: quay.io/centos/centos:stream9 # CentOS 9 is deprecated, use this Stream9 instead
   variables:
     GIT_STRATEGY: fetch
     GIT_SUBMODULE_STRATEGY: normal
   script:
-    - yum install -y yum-utils rpm-build openssl-devel pcre2-devel
-    - yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
-    # dnf --enablerepo=powertools install Judy-devel  #--> not found
-    - dnf config-manager --set-enabled powertools
-    # Error:
-    # Problem: conflicting requests
-    # - package Judy-devel-1.0.5-18.module_el8.3.0+757+d382997d.i686 is filtered out by modular filtering
-    # - package Judy-devel-1.0.5-18.module_el8.3.0+757+d382997d.x86_64 is filtered out by modular filtering
-    # Solution: install Judy-devel directly from downloaded rpm file:
-    - yum install -y http://vault.centos.org/centos/8/PowerTools/x86_64/os/Packages/Judy-devel-1.0.5-18.module_el8.3.0+757+d382997d.x86_64.rpm
-    # Use eatmydata to speed up build
-    - yum install -y https://github.com/stewartsmith/libeatmydata/releases/download/v129/libeatmydata-129-1.fc33.x86_64.rpm
-    - yum install -y ccache  # From EPEL
+    - yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-9.noarch.rpm
+    - yum install -y yum-utils rpm-build openssl-devel libeatmydata ccache
+    # Install missing dependencies
+    - yum install -y https://mirror.stream.centos.org/9-stream/CRB/x86_64/os/Packages/Judy-devel-1.0.5-28.el9.x86_64.rpm
+    - yum install -y https://mirror.stream.centos.org/9-stream/CRB/x86_64/os/Packages/bison-devel-3.7.4-5.el9.x86_64.rpm
+    - yum install -y https://mirror.stream.centos.org/9-stream/CRB/x86_64/os/Packages/multilib-rpm-config-1-19.el9.noarch.rpm
+    # Configure ccache
     - source /etc/profile.d/ccache.sh
     - export CCACHE_DIR="$(pwd)/.ccache"; ccache --zero-stats
     # This repository does not have any .spec files, so install dependencies based on CentOS spec file