diff --git a/.github/workflows/linux.bash b/.github/workflows/linux.bash
index 9deae8e74..fe0e7d551 100755
--- a/.github/workflows/linux.bash
+++ b/.github/workflows/linux.bash
@@ -7,9 +7,9 @@ export CTEST_OUTPUT_ON_FAILURE=1
 CMAKE_OPTS=''
 
 case "$DISTRO" in
-  amazonlinux:*)
+  amazonlinux:2)
     amazon-linux-extras install -y epel
-    yum install -y bison ccache cmake gcc-c++ flex ninja-build \
+    yum install -y bison ccache cmake3 gcc-c++ flex ninja-build \
       {libedit,mariadb,ncurses,openssl,postgresql,systemd}-devel
 
     yum install -y bzip2 tar wget
@@ -22,16 +22,23 @@ case "$DISTRO" in
       ./b2
     )
 
+    ln -vs /usr/bin/cmake3 /usr/local/bin/cmake
     ln -vs /usr/bin/ninja-build /usr/local/bin/ninja
     CMAKE_OPTS='-DBOOST_INCLUDEDIR=/boost_1_69_0 -DBOOST_LIBRARYDIR=/boost_1_69_0/stage/lib'
     export LD_LIBRARY_PATH=/boost_1_69_0/stage/lib
     ;;
 
+  amazonlinux:20*)
+    dnf install -y bison cmake flex gcc-c++ ninja-build \
+      {boost,libedit,mariadb1\*,ncurses,openssl,postgresql,systemd}-devel
+    ;;
+
   centos:*)
     yum install -y centos-release-scl epel-release
-    yum install -y bison ccache cmake devtoolset-11-gcc-c++ flex ninja-build \
+    yum install -y bison ccache cmake3 devtoolset-11-gcc-c++ flex ninja-build \
       {boost169,libedit,mariadb,ncurses,openssl,postgresql,systemd}-devel
 
+    ln -vs /usr/bin/cmake3 /usr/local/bin/cmake
     ln -vs /usr/bin/ccache /usr/lib64/ccache/g++
     CMAKE_OPTS='-DBOOST_INCLUDEDIR=/usr/include/boost169 -DBOOST_LIBRARYDIR=/usr/lib64/boost169'
     ;;
@@ -81,9 +88,7 @@ cmake \
   -DICINGA2_GROUP=$(id -gn) \
   $CMAKE_OPTS ..
 
-ccache -z
 ninja
-ccache -s
 
 ninja test
 ninja install
diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 6294a5c60..be238b170 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -22,18 +22,23 @@ jobs:
       matrix:
         distro:
           - amazonlinux:2
+          - amazonlinux:2023
           - centos:7 # and RHEL 7
           - debian:10
           - debian:11 # and Raspbian 11
+          - debian:12 # and Raspbian 12
           - fedora:36
           - fedora:37
-          - opensuse/leap:15.3 # and SLES 15.3
+          - fedora:38
+          - opensuse/leap:15.3 # SLES 15.3
           - opensuse/leap:15.4 # and SLES 15.4
+          - opensuse/leap:15.5 # and SLES 15.5
           - rockylinux:8 # RHEL 8
           - rockylinux:9 # RHEL 9
           - ubuntu:20.04
           - ubuntu:22.04
           - ubuntu:22.10
+          - ubuntu:23.04
 
     steps:
       - name: Checkout HEAD