diff --git a/.github/workflows/linux.bash b/.github/workflows/linux.bash
index fe0e7d551a8..51b978f5c80 100755
--- a/.github/workflows/linux.bash
+++ b/.github/workflows/linux.bash
@@ -1,7 +1,7 @@
 #!/bin/bash
 set -exo pipefail
 
-export PATH="/usr/lib/ccache:/usr/lib64/ccache:/opt/rh/devtoolset-11/root/usr/bin:$PATH"
+export PATH="/usr/lib/ccache:/usr/lib64/ccache:$PATH"
 export CCACHE_DIR=/icinga2/ccache
 export CTEST_OUTPUT_ON_FAILURE=1
 CMAKE_OPTS=''
@@ -33,16 +33,6 @@ case "$DISTRO" in
       {boost,libedit,mariadb1\*,ncurses,openssl,postgresql,systemd}-devel
     ;;
 
-  centos:*)
-    yum install -y centos-release-scl epel-release
-    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'
-    ;;
-
   debian:*|ubuntu:*)
     apt-get update
     DEBIAN_FRONTEND=noninteractive apt-get install --no-install-{recommends,suggests} -y bison \
diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 3eda27df270..e4703389805 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -23,7 +23,6 @@ jobs:
         distro:
           - amazonlinux:2
           - amazonlinux:2023
-          - centos:7 # and RHEL 7
           - debian:11 # and Raspbian 11
           - debian:12 # and Raspbian 12
           - fedora:37
@@ -33,6 +32,7 @@ jobs:
           - opensuse/leap:15.3 # SLES 15.3
           - opensuse/leap:15.4 # and SLES 15.4
           - opensuse/leap:15.5 # and SLES 15.5
+          - opensuse/leap:15.6 # and SLES 15.6
           - rockylinux:8 # RHEL 8
           - rockylinux:9 # RHEL 9
           - ubuntu:20.04
diff --git a/AUTHORS b/AUTHORS
index 790a847528b..3c6fb882291 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -11,6 +11,7 @@ Alexander Fuhr <alexander.fuhr@netways.de>
 Alexander Schomburg <script.acc@alex.schomb.org>
 Alexander Stoll <astoll@netways.de>
 Alexander Wirt <formorer@debian.org>
+Alvar Penning <alvar.penning@icinga.com>
 Andrea Avancini <andrea.avancini@wuerth-phoenix.com>
 Andrea Kao <eirinikos@gmail.com>
 Andreas Maus <maus@badphish.ypbind.de>
diff --git a/tools/win32/test.ps1 b/tools/win32/test.ps1
index d7ad90ce2cc..3d3c125407d 100644
--- a/tools/win32/test.ps1
+++ b/tools/win32/test.ps1
@@ -24,7 +24,7 @@ if (-not ($env:PATH -contains $env:CMAKE_PATH)) {
 
 cd "$env:ICINGA2_BUILDPATH"
 
-ctest.exe -C "${env:CMAKE_BUILD_TYPE}" -T test -O $env:ICINGA2_BUILDPATH/Test.xml --output-on-failure --log_level=all
+ctest.exe -C "${env:CMAKE_BUILD_TYPE}" -T test -O $env:ICINGA2_BUILDPATH/Test.xml --output-on-failure
 if ($lastexitcode -ne 0) {
   cd ..
   exit $lastexitcode