diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d2fdae1bc..6cbdf6d38 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -72,46 +72,8 @@ jobs:
         run-test: true
         ctest-options: -V
 
-  ubuntu-clang-mbedtls:
-    strategy:
-      matrix:
-        container: ["ubuntu:18.04", "ubuntu:20.04", "ubuntu:22.04",  "ubuntu:23.04"]
-        buildType: [Debug, Release]
-    runs-on: ubuntu-latest
-    container: ${{ matrix.container }}
-    steps:
-    - name: Update package list
-      run: apt update
-    - name: Install Dependencies
-      run: apt install -y git libssl-dev libmbedtls-dev cmake build-essential clang
-    - name: Setup cmake
-      uses: jwlawson/actions-setup-cmake@v1.13
-      with:
-        cmake-version: '3.22.x'
-    - name: Checkout
-      uses: actions/checkout@v3.1.0
-    - name: "Build & Test"
-      env:
-        CPR_BUILD_TESTS: ON
-        CPR_BUILD_TESTS_SSL: ON
-        CPR_FORCE_MBEDTLS_BACKEND: ON
-      uses: ashutoshvarma/action-cmake-build@master
-      with:
-        build-dir: ${{ github.workspace }}/build
-        source-dir: ${{ github.workspace }}
-        cc: clang
-        cxx: clang++
-        build-type: ${{ matrix.buildType }}
-        run-test: true
-        ctest-options: -V
-
   ubuntu-gcc-mbedtls:
-    strategy:
-      matrix:
-        container: ["ubuntu:18.04", "ubuntu:20.04", "ubuntu:22.04",  "ubuntu:23.04"]
-        buildType: [Debug, Release]
     runs-on: ubuntu-latest
-    container: ${{ matrix.container }}
     steps:
     - name: Update package list
       run: apt update
@@ -134,7 +96,7 @@ jobs:
         source-dir: ${{ github.workspace }}
         cc: gcc
         cxx: g++
-        build-type: ${{ matrix.buildType }}
+        build-type: Release
         run-test: true
         ctest-options: -V
 
@@ -142,8 +104,6 @@ jobs:
     strategy:
       matrix:
         container: ["fedora:latest"]
-        systemCurl: [ON, OFF]
-        buildType: [Debug, Release]
     runs-on: ubuntu-latest
     container: ${{ matrix.container }}
     steps:
@@ -158,14 +118,14 @@ jobs:
         CPR_BUILD_TESTS: ON
         CPR_BUILD_TESTS_SSL: ON
         CPR_FORCE_OPENSSL_BACKEND: ON
-        USE_SYSTEM_CURL: ${{ matrix.systemCurl }}
+        USE_SYSTEM_CURL: OFF
       uses: ashutoshvarma/action-cmake-build@master
       with:
         build-dir: ${{ github.workspace }}/build
         source-dir: ${{ github.workspace }}
         cc: clang
         cxx: clang++
-        build-type: ${{ matrix.buildType }}
+        build-type: Release
         run-test: true
         ctest-options: -V
 
@@ -200,64 +160,6 @@ jobs:
         run-test: true
         ctest-options: -V
 
-  fedora-clang-mbedtls:
-    strategy:
-      matrix:
-        container: ["fedora:latest"]
-        buildType: [Debug, Release]
-    runs-on: ubuntu-latest
-    container: ${{ matrix.container }}
-    steps:
-    - name: Update package list
-      run: dnf update -y
-    - name: Install Dependencies
-      run: dnf install -y gcc clang git gcc gdb make openssl-devel mbedtls-devel libcurl-devel cmake
-    - name: Checkout
-      uses: actions/checkout@v3.1.0
-    - name: "Build & Test"
-      env:
-        CPR_BUILD_TESTS: ON
-        CPR_BUILD_TESTS_SSL: ON
-        CPR_FORCE_MBEDTLS_BACKEND: ON
-      uses: ashutoshvarma/action-cmake-build@master
-      with:
-        build-dir: ${{ github.workspace }}/build
-        source-dir: ${{ github.workspace }}
-        cc: clang
-        cxx: clang++
-        build-type: ${{ matrix.buildType }}
-        run-test: true
-        ctest-options: -V
-
-  fedora-gcc-mbedtls:
-    strategy:
-      matrix:
-        container: ["fedora:latest"]
-        buildType: [Debug, Release]
-    runs-on: ubuntu-latest
-    container: ${{ matrix.container }}
-    steps:
-    - name: Update package list
-      run: dnf update -y
-    - name: Install Dependencies
-      run: dnf install -y gcc clang git gcc gdb make openssl-devel mbedtls-devel libcurl-devel cmake
-    - name: Checkout
-      uses: actions/checkout@v3.1.0
-    - name: "Build & Test"
-      env:
-        CPR_BUILD_TESTS: ON
-        CPR_BUILD_TESTS_SSL: ON
-        CPR_FORCE_MBEDTLS_BACKEND: ON
-      uses: ashutoshvarma/action-cmake-build@master
-      with:
-        build-dir: ${{ github.workspace }}/build
-        source-dir: ${{ github.workspace }}
-        cc: gcc
-        cxx: g++
-        build-type: ${{ matrix.buildType }}
-        run-test: true
-        ctest-options: -V
-
   fedora-gcc-ssl-sanitizer:
     strategy:
       matrix:
@@ -285,11 +187,11 @@ jobs:
         run-test: true
         ctest-options: -V
 
-  windows22-msvc-ssl:
+  windows-msvc-ssl:
     strategy:
       matrix:
         buildType: [Debug, Release]
-    runs-on: windows-2022
+    runs-on: windows-latest
     steps:
     - name: Checkout
       uses: actions/checkout@v3.1.0
@@ -306,32 +208,8 @@ jobs:
         run-test: true
         ctest-options: -V
 
-  windows19-msvc-ssl:
-    strategy:
-      matrix:
-        buildType: [Debug, Release]
-    runs-on: windows-2019
-    steps:
-    - name: Checkout
-      uses: actions/checkout@v3.1.0
-    - name: "Build & Test"
-      env:
-        CMAKE_GENERATOR: "Visual Studio 16 2019"
-        CPR_BUILD_TESTS: ON
-        CPR_BUILD_TESTS_SSL: OFF
-      uses: ashutoshvarma/action-cmake-build@master
-      with:
-        build-dir: ${{ github.workspace }}/build
-        source-dir: ${{ github.workspace }}
-        build-type: ${{ matrix.buildType }}
-        run-test: true
-        ctest-options: -V
-
-  windows22-msvc-openssl:
-    strategy:
-      matrix:
-        buildType: [Debug, Release]
-    runs-on: windows-2022
+  windows-msvc-openssl:
+    runs-on: windows-latest
     steps:
     - name: Install OpenSSL
       run: choco install openssl -y
@@ -347,40 +225,12 @@ jobs:
       with:
         build-dir: ${{ github.workspace }}/build
         source-dir: ${{ github.workspace }}
-        build-type: ${{ matrix.buildType }}
-        run-test: true
-        ctest-options: -V
-
-  windows19-msvc-openssl:
-    strategy:
-      matrix:
-        buildType: [Debug, Release]
-    runs-on: windows-2019
-    steps:
-    - name: Install OpenSSL
-      run: choco install openssl -y
-    - name: Checkout
-      uses: actions/checkout@v3.1.0
-    - name: "Build & Test"
-      env:
-        CMAKE_GENERATOR: "Visual Studio 16 2019"
-        CPR_BUILD_TESTS: ON
-        CPR_BUILD_TESTS_SSL: ON
-        CPR_FORCE_OPENSSL_BACKEND: ON
-      uses: ashutoshvarma/action-cmake-build@master
-      with:
-        build-dir: ${{ github.workspace }}/build
-        source-dir: ${{ github.workspace }}
-        build-type: ${{ matrix.buildType }}
+        build-type: Release
         run-test: true
         ctest-options: -V
 
   macos-clang-openssl:
-    strategy:
-      matrix:
-        os: [macos-12, macos-11]
-        buildType: [Debug, Release]
-    runs-on: ${{ matrix.os }}
+    runs-on: macos-latest
     steps:
     - name: Install OpenSSL
       run: |
@@ -405,16 +255,15 @@ jobs:
         source-dir: ${{ github.workspace }}
         cc: clang
         cxx: clang++
-        build-type: ${{ matrix.buildType }}
+        build-type: Release
         run-test: true
         ctest-options: -V
 
   macos-clang-ssl:
     strategy:
       matrix:
-        os: [macos-12, macos-11]
         buildType: [Debug, Release]
-    runs-on: ${{ matrix.os }}
+    runs-on: macos-latest
     steps:
     - name: Checkout
       uses: actions/checkout@v3.1.0
@@ -433,11 +282,7 @@ jobs:
         ctest-options: -V
 
   macos-clang-darwinssl:
-    strategy:
-      matrix:
-        os: [macos-12, macos-11]
-        buildType: [Debug, Release]
-    runs-on: ${{ matrix.os }}
+    runs-on: macos-latest
     steps:
     - name: Checkout
       uses: actions/checkout@v3.1.0
@@ -452,16 +297,12 @@ jobs:
         source-dir: ${{ github.workspace }}
         cc: clang
         cxx: clang++
-        build-type: ${{ matrix.buildType }}
+        build-type: Release
         run-test: true
         ctest-options: -V
 
   macos-clang-openssl-boost:
-    strategy:
-      matrix:
-        os: [macos-12, macos-11]
-        buildType: [Debug, Release]
-    runs-on: ${{ matrix.os }}
+    runs-on: macos-latest
     steps:
     - name: Install Boost
       run: brew install boost
@@ -490,6 +331,6 @@ jobs:
         source-dir: ${{ github.workspace }}
         cc: clang
         cxx: clang++
-        build-type: ${{ matrix.buildType }}
+        build-type: Release
         run-test: true
         ctest-options: -V