diff --git a/.github/workflows/containers.yml b/.github/workflows/containers.yml
index ea982f58c7..6c9cbbefb5 100644
--- a/.github/workflows/containers.yml
+++ b/.github/workflows/containers.yml
@@ -29,14 +29,10 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - distro: "ubuntu"
-            version: "18.04"
           - distro: "ubuntu"
             version: "20.04"
           - distro: "ubuntu"
             version: "22.04"
-          - distro: "opensuse"
-            version: "15.2"
           - distro: "opensuse"
             version: "15.3"
           - distro: "opensuse"
@@ -86,22 +82,6 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          # ubuntu 18.04
-          - os-distro: "ubuntu"
-            os-version: "18.04"
-            rocm-version: "0.0"
-          - os-distro: "ubuntu"
-            os-version: "18.04"
-            rocm-version: "4.5"
-          - os-distro: "ubuntu"
-            os-version: "18.04"
-            rocm-version: "5.0"
-          - os-distro: "ubuntu"
-            os-version: "18.04"
-            rocm-version: "5.1"
-          - os-distro: "ubuntu"
-            os-version: "18.04"
-            rocm-version: "5.2"
           # ubuntu 20.04
           - os-distro: "ubuntu"
             os-version: "20.04"
diff --git a/.github/workflows/cpack.yml b/.github/workflows/cpack.yml
index 16eab94be3..c374342dc1 100644
--- a/.github/workflows/cpack.yml
+++ b/.github/workflows/cpack.yml
@@ -31,10 +31,6 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          # ubuntu 18.04
-          - os-distro: "ubuntu"
-            os-version: "18.04"
-            rocm-version: "0.0"
           # ubuntu 20.04
           - os-distro: "ubuntu"
             os-version: "20.04"
diff --git a/.github/workflows/opensuse.yml b/.github/workflows/opensuse.yml
index d623111978..fa65650bd7 100644
--- a/.github/workflows/opensuse.yml
+++ b/.github/workflows/opensuse.yml
@@ -42,7 +42,7 @@ jobs:
       fail-fast: false
       matrix:
         compiler: ['g++']
-        os-release: [ '15.2', '15.3', '15.4' ]
+        os-release: [ '15.3', '15.4' ]
         build-type: ['Release']
 
     steps:
diff --git a/.github/workflows/ubuntu-bionic.yml b/.github/workflows/ubuntu-bionic.yml
deleted file mode 100644
index 48c14ffd7f..0000000000
--- a/.github/workflows/ubuntu-bionic.yml
+++ /dev/null
@@ -1,184 +0,0 @@
-name: Ubuntu 18.04 (GCC, MPICH, Python)
-run-name: ubuntu-bionic
-
-on:
-  push:
-    branches: [ main, develop ]
-    paths-ignore:
-      - '*.md'
-      - 'source/docs/**'
-      - 'source/python/gui/**'
-      - '.github/workflows/docs.yml'
-      - '.github/workflows/cpack.yml'
-      - '.github/workflows/containers.yml'
-      - '.github/workflows/formatting.yml'
-      - 'docker/**'
-  pull_request:
-    branches: [ main, develop ]
-    paths-ignore:
-      - '*.md'
-      - 'source/docs/**'
-      - 'source/python/gui/**'
-      - '.github/workflows/docs.yml'
-      - '.github/workflows/cpack.yml'
-      - '.github/workflows/containers.yml'
-      - '.github/workflows/formatting.yml'
-      - 'docker/**'
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: true
-
-env:
-  BUILD_TYPE: Release
-  OMNITRACE_CI: ON
-  GIT_DISCOVERY_ACROSS_FILESYSTEM: 1
-  OMNITRACE_TMPDIR: "%env{PWD}%/testing-tmp"
-
-jobs:
-  ubuntu-bionic:
-    runs-on: ubuntu-latest
-    container:
-      image: jrmadsen/omnitrace:ci-base-ubuntu-18.04
-    strategy:
-      fail-fast: false
-      matrix:
-        compiler: ['g++-7', 'g++-8']
-        mpi: [ 'nompi', 'mpich' ]
-
-    steps:
-    - name: Patch Git
-      timeout-minutes: 25
-      run: |
-        apt-get update
-        apt-get install -y software-properties-common
-        add-apt-repository -y ppa:git-core/ppa
-        apt-get update
-        apt-get upgrade -y
-        apt-get install -y git
-
-    - uses: actions/checkout@v3
-      with:
-        submodules: recursive
-
-    - name: Install Packages
-      timeout-minutes: 25
-      uses: nick-fields/retry@v2
-      with:
-        retry_wait_seconds: 30
-        timeout_minutes: 25
-        max_attempts: 5
-        command: |
-          apt-get update &&
-          apt-get upgrade -y &&
-          apt-get install -y build-essential m4 autoconf libtool python3-pip ${{ matrix.compiler }} &&
-          if [ "${{ matrix.mpi }}" = "mpich" ]; then apt-get install -y libmpich-dev mpich; fi &&
-          if [ "${{ matrix.mpi }}" = "openmpi" ]; then apt-get install -y libopenmpi-dev openmpi-bin libfabric-dev; fi &&
-          python3 -m pip install --upgrade pip &&
-          python3 -m pip install numpy &&
-          python3 -m pip install perfetto &&
-          python3 -m pip install 'cmake==3.16.3' &&
-          for i in 6 7 8 9 10; do /opt/conda/envs/py3.${i}/bin/python -m pip install numpy perfetto dataclasses; done
-
-    - name: Install Kokkos
-      timeout-minutes: 10
-      run:
-        cd examples/lulesh/external/kokkos &&
-        cmake -B build -DKokkos_ENABLE_OPENMP=ON -DKokkos_ENABLE_SERIAL=ON -DBUILD_SHARED_LIBS=ON -DCMAKE_CXX_STANDARD=17 . &&
-        cmake --build build --target all --parallel 2 &&
-        cmake --build build --target install &&
-        rm -rf build
-
-    - name: Configure Env
-      run:
-        echo "CC=$(echo '${{ matrix.compiler }}' | sed 's/+/c/g')" >> $GITHUB_ENV &&
-        echo "CXX=${{ matrix.compiler }}" >> $GITHUB_ENV &&
-        echo "/opt/omnitrace/bin:${HOME}/.local/bin" >> $GITHUB_PATH &&
-        echo "LD_LIBRARY_PATH=/opt/omnitrace/lib:${LD_LIBRARY_PATH}" >> $GITHUB_ENV
-
-    - name: Configure, Build, and Test
-      timeout-minutes: 115
-      shell: bash
-      run:
-        git config --global --add safe.directory ${PWD} &&
-        cmake --version &&
-        if [ "${{ matrix.mpi }}" = "nompi" ]; then USE_MPI=OFF; else USE_MPI=ON; fi &&
-        append-tagname() { if [ "${1}" == "ON" ]; then TAG="${TAG}-${2}"; fi; } &&
-        python3 ./scripts/run-ci.py -B build
-          --name ${{ github.repository_owner }}-${{ github.ref_name }}-ubuntu-bionic-${{ matrix.compiler }}-${{ matrix.mpi }}-python
-          --build-jobs 2
-          --site GitHub
-          --
-          -DCMAKE_C_COMPILER=$(echo '${{ matrix.compiler }}' | sed 's/+/c/g')
-          -DCMAKE_CXX_COMPILER=${{ matrix.compiler }}
-          -DCMAKE_BUILD_TYPE=${{ env.BUILD_TYPE }}
-          -DCMAKE_INSTALL_PREFIX=/opt/omnitrace
-          -DOMNITRACE_BUILD_TESTING=ON
-          -DOMNITRACE_BUILD_DYNINST=OFF
-          -DOMNITRACE_USE_MPI=${USE_MPI}
-          -DOMNITRACE_USE_HIP=OFF
-          -DOMNITRACE_USE_PYTHON=ON
-          -DOMNITRACE_PYTHON_PREFIX=/opt/conda/envs
-          -DOMNITRACE_PYTHON_ENVS="py3.6;py3.7;py3.8;py3.9;py3.10;py3.11"
-          -DLULESH_BUILD_KOKKOS=OFF
-          -DOMNITRACE_MAX_THREADS=64
-          -DOMNITRACE_DISABLE_EXAMPLES="transpose;rccl"
-          -DOMNITRACE_BUILD_NUMBER=${{ github.run_attempt }}
-
-    - name: Install
-      run:
-        cmake --build build --target install --parallel 2
-
-    - name: Test Install
-      timeout-minutes: 10
-      run: |
-        set -v
-        export OMNITRACE_DEBUG=ON
-        which omnitrace-avail
-        ldd $(which omnitrace-avail)
-        omnitrace-avail --help
-        omnitrace-avail -a
-        which omnitrace
-        ldd $(which omnitrace)
-        omnitrace-instrument --help
-        omnitrace-instrument -e -v 1 -o ls.inst --simulate -- ls
-        for i in $(find omnitrace-ls.inst-output -type f); do echo -e "\n\n --> ${i} \n\n"; cat ${i}; done
-        omnitrace-instrument -e -v 1 -o ls.inst -- ls
-        omnitrace-run -- ./ls.inst
-        omnitrace-instrument -e -v 1 --simulate -- ls
-        for i in $(find omnitrace-ls-output -type f); do echo -e "\n\n --> ${i} \n\n"; cat ${i}; done
-        omnitrace-instrument -e -v 1 -- ls
-
-    - name: Test User API
-      timeout-minutes: 10
-      run: |
-        set -v
-        ./scripts/test-find-package.sh --install-dir /opt/omnitrace
-
-    - name: CTest Artifacts
-      if: failure()
-      continue-on-error: True
-      uses: actions/upload-artifact@v3
-      with:
-        name: ctest-${{ github.job }}-${{ strategy.job-index }}-log
-        path: |
-          build/*.log
-
-    - name: Data Artifacts
-      if: failure()
-      continue-on-error: True
-      uses: actions/upload-artifact@v3
-      with:
-        name: data-${{ github.job }}-${{ strategy.job-index }}-files
-        path: |
-          build/omnitrace-tests-config/*.cfg
-          build/omnitrace-tests-output/**/*.txt
-          build/omnitrace-tests-output/**/*-instr*.json
-
-    - name: Kill Perfetto
-      if: success() || failure()
-      continue-on-error: True
-      run: |
-        set +e
-        RUNNING_PROCS=$(pgrep trace_processor_shell)
-        if [ -n "${RUNNING_PROCS}" ]; then kill -s 9 ${RUNNING_PROCS}; fi
diff --git a/README.md b/README.md
index a938f0af11..011f9fe2b8 100755
--- a/README.md
+++ b/README.md
@@ -1,6 +1,5 @@
 # Omnitrace: Application Profiling, Tracing, and Analysis
 
-[![Ubuntu 18.04 with GCC and MPICH](https://github.com/ROCm/omnitrace/actions/workflows/ubuntu-bionic.yml/badge.svg)](https://github.com/ROCm/omnitrace/actions/workflows/ubuntu-bionic.yml)
 [![Ubuntu 20.04 with GCC, ROCm, and MPI](https://github.com/ROCm/omnitrace/actions/workflows/ubuntu-focal.yml/badge.svg)](https://github.com/ROCm/omnitrace/actions/workflows/ubuntu-focal.yml)
 [![Ubuntu 22.04 (GCC, Python, ROCm)](https://github.com/ROCm/omnitrace/actions/workflows/ubuntu-jammy.yml/badge.svg)](https://github.com/ROCm/omnitrace/actions/workflows/ubuntu-jammy.yml)
 [![OpenSUSE 15.x with GCC](https://github.com/ROCm/omnitrace/actions/workflows/opensuse.yml/badge.svg)](https://github.com/ROCm/omnitrace/actions/workflows/opensuse.yml)
diff --git a/cmake/ConfigCPack.cmake b/cmake/ConfigCPack.cmake
index 208e6beb6a..5f8ecbbe32 100644
--- a/cmake/ConfigCPack.cmake
+++ b/cmake/ConfigCPack.cmake
@@ -47,7 +47,7 @@ set(CPACK_RESOURCE_FILE_LICENSE "${PROJECT_SOURCE_DIR}/LICENSE")
 set(CPACK_INCLUDE_TOPLEVEL_DIRECTORY OFF)
 set(OMNITRACE_CPACK_SYSTEM_NAME
     "${_SYSTEM_NAME}"
-    CACHE STRING "System name, e.g. Linux or Ubuntu-18.04")
+    CACHE STRING "System name, e.g. Linux or Ubuntu-20.04")
 set(OMNITRACE_CPACK_PACKAGE_SUFFIX "")
 
 if(OMNITRACE_USE_HIP
diff --git a/cmake/Templates/omnitrace-install.py.in b/cmake/Templates/omnitrace-install.py.in
index c55bb44adc..bcf94ffac5 100755
--- a/cmake/Templates/omnitrace-install.py.in
+++ b/cmake/Templates/omnitrace-install.py.in
@@ -103,8 +103,8 @@ def get_os_info(os_distrib, os_version):
             if "debian" in _os_info["ID_LIKE"]:
                 os_distrib = "ubuntu"
                 if os_version is None:
-                    # fallback on 18.04 if ID is not ubuntu but debian-like
-                    os_version = "18.04"
+                    # fallback on 20.04 if ID is not ubuntu but debian-like
+                    os_version = "20.04"
             elif "suse" in _os_info["ID_LIKE"]:
                 os_distrib = "opensuse"
                 # fallback on 15.3 if ID is not opensuse but suse-like
diff --git a/docker/build-docker-release.sh b/docker/build-docker-release.sh
index e44fa8e76b..d4338711f7 100755
--- a/docker/build-docker-release.sh
+++ b/docker/build-docker-release.sh
@@ -98,7 +98,7 @@ reset-last
 
 : ${USER:=$(whoami)}
 : ${DISTRO:=ubuntu}
-: ${VERSIONS:=20.04 18.04}
+: ${VERSIONS:=22.04 20.04}
 : ${ROCM_VERSIONS:=5.0 4.5 4.3}
 : ${MPI:=0}
 : ${PYTHON_VERSIONS:="6 7 8 9 10 11 12"}