diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 87d89945f91c..7ceb9e9da84c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -222,6 +222,9 @@ jobs:
         - name: linux_clang-12_release
           os: ubuntu-latest
           env: {CXX: clang++, CC: clang,  ALPAKA_CI_CLANG_VER: 12,     ALPAKA_CI_STDLIB: libc++,    CMAKE_BUILD_TYPE: Release, ALPAKA_CI_BOOST_BRANCH: boost-1.76.0, ALPAKA_CI_CMAKE_VER: 3.21.1, OMP_NUM_THREADS: 4, ALPAKA_CI_DOCKER_BASE_IMAGE_NAME: "ubuntu:20.04", ALPAKA_ACC_CPU_B_TBB_T_SEQ_ENABLE: OFF, CMAKE_CXX_EXTENSIONS: OFF}
+        - name: linux_clang-13_debug
+          os: ubuntu-latest
+          env: {CXX: clang++, CC: clang,  ALPAKA_CI_CLANG_VER: 13,     ALPAKA_CI_STDLIB: libstdc++, CMAKE_BUILD_TYPE: Debug,   ALPAKA_CI_BOOST_BRANCH: boost-1.74.0, ALPAKA_CI_CMAKE_VER: 3.20.0, OMP_NUM_THREADS: 3, ALPAKA_CI_DOCKER_BASE_IMAGE_NAME: "ubuntu:20.04", CMAKE_CXX_EXTENSIONS: OFF}
 
         # icpc
         - name: linux_icpc_release
diff --git a/README.md b/README.md
index 498a8384fa29..d1ffa16c308d 100644
--- a/README.md
+++ b/README.md
@@ -70,18 +70,18 @@ Supported Compilers
 
 This library uses C++17 (or newer when available).
 
-|Accelerator Back-end|gcc 7.5 <br/> (Linux)|gcc 8.5 <br/> (Linux)|gcc 9.4 <br/> (Linux)|gcc 10.3 <br/> (Linux)|gcc 11.1 <br/> (Linux)|clang 5-7 <br/> (Linux)|clang 8-9 <br/> (Linux)|clang 10 <br/> (Linux)|clang 11 <br/> (Linux)|clang 12 <br/> (Linux)|Apple LLVM 11.3.1/12.4.0/12.5.1/13.0.0 <br /> (macOS)|MSVC 2019 <br/> (Windows)|
-|---|---|---|---|---|---|---|---|---|---|---|---|---|
-|Serial|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|
-|OpenMP 2.0+ blocks|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:x:|:white_check_mark:|
-|OpenMP 2.0+ threads|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:x:|:white_check_mark:|
-|OpenMP 5.0 (CPU)|:x:|:x:|:x:|:x:|:x:|:x:|:x:|:x:|:white_check_mark:|:white_check_mark:|:x:|:x:|
-| std::thread |:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|
-| Boost.Fiber |:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:x:|:white_check_mark:|
-|TBB|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:x:|
-|CUDA (nvcc)|:white_check_mark: <br/> (CUDA 11.0-11.5) |:white_check_mark: <br/> (CUDA 11.0-11.5) |:white_check_mark: <br/> (CUDA 11.0-11.5)|:white_check_mark: <br/> (CUDA 11.5)|:x:|:x:|:white_check_mark: <br/> (CUDA 11.0-11.5)|:white_check_mark: <br/> (CUDA 11.1-11.5)|:white_check_mark: <br/> (CUDA 11.4-11.5)|:white_check_mark: <br/> (CUDA 11.4-11.5)|:x:|:white_check_mark: <br/> (CUDA 11.2-11.5)|
-|CUDA (clang) | - | - | - | - | - | - | - | :x: | :white_check_mark: <br/> (CUDA 9.2-10.1) | :white_check_mark: <br/> (CUDA 10.0-10.2) | - | - |
-|[HIP-4.0.1](https://alpaka.readthedocs.io/en/latest/install/HIP.html) (clang)|:x:|:x:|:x:|:x:|:x:|:x:|:x:|:x:|:x:|:white_check_mark:| - | - |
+|Accelerator Back-end|gcc 7.5 <br/> (Linux)|gcc 8.5 <br/> (Linux)|gcc 9.4 <br/> (Linux)|gcc 10.3 <br/> (Linux)|gcc 11.1 <br/> (Linux)|clang 5-7 <br/> (Linux)|clang 8-9 <br/> (Linux)|clang 10 <br/> (Linux)|clang 11 <br/> (Linux)|clang 12 <br/> (Linux)| clang 13 <br/> (Linux) |Apple LLVM 11.3.1/12.4.0/12.5.1/13.0.0 <br /> (macOS)|MSVC 2019 <br/> (Windows)|
+|---|---|---|---|---|---|---|---|---|---|---|------------------------|---|---|
+|Serial|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:| :white_check_mark:     |:white_check_mark:|:white_check_mark:|
+|OpenMP 2.0+ blocks|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:| :white_check_mark:     |:x:|:white_check_mark:|
+|OpenMP 2.0+ threads|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:| :white_check_mark:     |:x:|:white_check_mark:|
+|OpenMP 5.0 (CPU)|:x:|:x:|:x:|:x:|:x:|:x:|:x:|:x:|:white_check_mark:|:white_check_mark:| -                      |:x:|:x:|
+| std::thread |:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:| :white_check_mark:     |:white_check_mark:|:white_check_mark:|
+| Boost.Fiber |:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:| :white_check_mark:     |:x:|:white_check_mark:|
+|TBB|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:|:white_check_mark:| :white_check_mark:     |:white_check_mark:|:x:|
+|CUDA (nvcc)|:white_check_mark: <br/> (CUDA 11.0-11.5) |:white_check_mark: <br/> (CUDA 11.0-11.5) |:white_check_mark: <br/> (CUDA 11.0-11.5)|:white_check_mark: <br/> (CUDA 11.5)|:x:|:x:|:white_check_mark: <br/> (CUDA 11.0-11.5)|:white_check_mark: <br/> (CUDA 11.1-11.5)|:white_check_mark: <br/> (CUDA 11.4-11.5)|:white_check_mark: <br/> (CUDA 11.4-11.5)| - |:x:|:white_check_mark: <br/> (CUDA 11.2-11.5)|
+|CUDA (clang) | - | - | - | - | - | - | - | :x: | :white_check_mark: <br/> (CUDA 9.2-10.1) | :white_check_mark: <br/> (CUDA 10.0-10.2) | - | - | - |
+|[HIP-4.0.1](https://alpaka.readthedocs.io/en/latest/install/HIP.html) (clang)|:x:|:x:|:x:|:x:|:x:|:x:|:x:|:x:|:x:|:white_check_mark:| - | - | - |
 
 Other compilers or combinations marked with :x: in the table above may work but are not tested in CI and are therefore not explicitly supported.
 
diff --git a/script/install_clang.sh b/script/install_clang.sh
index 8fd927ac17bd..c92361888cf2 100755
--- a/script/install_clang.sh
+++ b/script/install_clang.sh
@@ -18,7 +18,7 @@ source ./script/set.sh
 : "${ALPAKA_CI_STDLIB?'ALPAKA_CI_STDLIB must be specified'}"
 : "${CXX?'CXX must be specified'}"
 
-# add clang-11 reposetory for ubuntu 18.04
+# add clang-11 repository for ubuntu 18.04
 if [[ "$(cat /etc/os-release)" == *"18.04"* && "${ALPAKA_CI_CLANG_VER}" -eq 11 ]]
 then
     travis_retry sudo DEBIAN_FRONTEND=noninteractive apt-get -y --quiet --allow-unauthenticated --no-install-recommends install tzdata
@@ -29,6 +29,13 @@ then
     travis_retry apt-get -y --quiet update
 fi
 
+# add clang-13 repository for ubuntu 20.04
+if [[ "$(cat /etc/os-release)" == *"20.04"* && "${ALPAKA_CI_CLANG_VER}" -eq 13 ]]
+then
+    wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
+    sudo add-apt-repository 'deb http://apt.llvm.org/focal/ llvm-toolchain-focal-13 main'
+fi
+
 travis_retry sudo apt-get -y --quiet --allow-unauthenticated --no-install-recommends install clang-${ALPAKA_CI_CLANG_VER}
 
 if [ "${ALPAKA_CI_STDLIB}" == "libc++" ]