diff --git a/.github/conan/profiles/base b/.github/conan/profiles/base
index cfe563704..d264e7c9f 100644
--- a/.github/conan/profiles/base
+++ b/.github/conan/profiles/base
@@ -7,5 +7,4 @@ boost:header_only=True
 boost:without_fiber=True
 boost:without_locale=True
 boost:without_log=True
-cmake:with_openssl=False
 test=all
diff --git a/.github/conan/settings.yml b/.github/conan/settings.yml
index a297e1357..7ff4ec01d 100644
--- a/.github/conan/settings.yml
+++ b/.github/conan/settings.yml
@@ -22,33 +22,32 @@ os:
     Linux:
     iOS:
         version: &ios_version
-            ["7.0", "7.1", "8.0", "8.1", "8.2", "8.3", "9.0", "9.1", "9.2", "9.3",
-             "10.0", "10.1", "10.2", "10.3",
+            ["7.0", "7.1", "8.0", "8.1", "8.2", "8.3", "9.0", "9.1", "9.2", "9.3", "10.0", "10.1", "10.2", "10.3",
              "11.0", "11.1", "11.2", "11.3", "11.4", "12.0", "12.1", "12.2", "12.3", "12.4",
              "13.0", "13.1", "13.2", "13.3", "13.4", "13.5", "13.6", "13.7",
              "14.0", "14.1", "14.2", "14.3", "14.4", "14.5", "14.6", "14.7", "14.8",
-             "15.0", "15.1", "15.2", "15.3", "15.4"]
+             "15.0", "15.1", "15.2", "15.3", "15.4", "15.5", "15.6", "16.0", "16.1"]
         sdk: [None, "iphoneos", "iphonesimulator"]
         sdk_version: [None, "11.3", "11.4", "12.0", "12.1", "12.2", "12.4",
                       "13.0", "13.1", "13.2", "13.4", "13.5", "13.6", "13.7",
-                      "14.0", "14.1", "14.2", "14.3", "14.4", "14.5", "15.0", "15.2", "15.4"]
+                      "14.0", "14.1", "14.2", "14.3", "14.4", "14.5", "15.0", "15.2", "15.4", "15.5", "16.0", "16.1"]
     watchOS:
         version: ["4.0", "4.1", "4.2", "4.3", "5.0", "5.1", "5.2", "5.3", "6.0", "6.1", "6.2",
-                  "7.0", "7.1", "7.2", "7.3", "7.4", "7.5", "7.6", "8.0", "8.1", "8.3", "8.4", "8.5"]
+                  "7.0", "7.1", "7.2", "7.3", "7.4", "7.5", "7.6", "8.0", "8.1", "8.3", "8.4", "8.5", "8.6", "8.7", "9.0", "9.1"]
         sdk: [None, "watchos", "watchsimulator"]
         sdk_version: [None, "4.3", "5.0", "5.1", "5.2", "5.3", "6.0", "6.1", "6.2",
-                      "7.0", "7.1", "7.2", "7.4", "8.0", "8.0.1", "8.3", "8.5"]
+                      "7.0", "7.1", "7.2", "7.4", "8.0", "8.0.1", "8.3", "8.5", "9.0", "9.1"]
     tvOS:
         version: ["11.0", "11.1", "11.2", "11.3", "11.4", "12.0", "12.1", "12.2", "12.3", "12.4",
                   "13.0", "13.2", "13.3", "13.4", "14.0", "14.2", "14.3", "14.4", "14.5", "14.6", "14.7",
-                  "15.0", "15.1", "15.2", "15.3", "15.4"]
+                  "15.0", "15.1", "15.2", "15.3", "15.4", "15.5", "15.6", "16.0", "16.1"]
         sdk: [None, "appletvos", "appletvsimulator"]
         sdk_version: [None, "11.3", "11.4", "12.0", "12.1", "12.2", "12.4",
-                      "13.0", "13.1", "13.2", "13.4", "14.0", "14.2", "14.3", "14.5", "15.0", "15.2", "15.4"]
+                      "13.0", "13.1", "13.2", "13.4", "14.0", "14.2", "14.3", "14.5", "15.0", "15.2", "15.4", "16.0", "16.1"]
     Macos:
         version: [None, "10.6", "10.7", "10.8", "10.9", "10.10", "10.11", "10.12", "10.13", "10.14", "10.15", "11.0", "12.0", "13.0"]
         sdk: [None, "macosx"]
-        sdk_version: [None, "10.13", "10.14", "10.15", "11.0", "11.1", "11.3", "12.0", "12.1", "12.3"]
+        sdk_version: [None, "10.13", "10.14", "10.15", "11.0", "11.1", "11.3", "12.0", "12.1", "12.3", "13.0", "13.1"]
         subsystem:
             None:
             catalyst:
@@ -77,11 +76,12 @@ compiler:
                   "5", "5.1", "5.2", "5.3", "5.4", "5.5",
                   "6", "6.1", "6.2", "6.3", "6.4", "6.5",
                   "7", "7.1", "7.2", "7.3", "7.4", "7.5",
-                  "8", "8.1", "8.2", "8.3", "8.4",
-                  "9", "9.1", "9.2", "9.3", "9.4",
-                  "10", "10.1", "10.2", "10.3",
-                  "11", "11.1", "11.2",
-                  "12"]
+                  "8", "8.1", "8.2", "8.3", "8.4", "8.5",
+                  "9", "9.1", "9.2", "9.3", "9.4", "9.5",
+                  "10", "10.1", "10.2", "10.3", "10.4", "10.5",
+                  "11", "11.1", "11.2", "11.3", "11.4",
+                  "12", "12.1", "12.2", "12.3",
+                  "13", "13.1", "13.2"]
         libcxx: [libstdc++, libstdc++11]
         threads: [None, posix, win32]  # Windows MinGW
         exception: [None, dwarf2, sjlj, seh]  # Windows MinGW
@@ -105,15 +105,17 @@ compiler:
     clang:
         version: ["3.3", "3.4", "3.5", "3.6", "3.7", "3.8", "3.9", "4.0",
                   "5.0", "6.0", "7.0", "7.1",
-                  "8", "9", "10", "11", "12", "13", "14", "15"]
+                  "8", "9", "10", "11", "12", "13", "14", "15", "16", "17"]
         libcxx: [None, libstdc++, libstdc++11, libc++, c++_shared, c++_static]
         cppstd: [None, 98, gnu98, 11, gnu11, 14, gnu14, 17, gnu17, 20, gnu20, 23, gnu23]
         runtime: [None, MD, MT, MTd, MDd, static, dynamic]
         runtime_type: [None, Debug, Release]
+        runtime_version: [None, v140, v141, v142, v143]
     apple-clang: &apple_clang
-        version: ["5.0", "5.1", "6.0", "6.1", "7.0", "7.3", "8.0", "8.1", "9.0", "9.1", "10.0", "11.0", "12.0", "13", "13.0", "13.1"]
+        version: ["5.0", "5.1", "6.0", "6.1", "7.0", "7.3", "8.0", "8.1", "9.0", "9.1",
+                  "10.0", "11.0", "12.0", "13", "13.0", "13.1", "14", "14.0", "15", "15.0"]
         libcxx: [libstdc++, libc++]
-        cppstd: [None, 98, gnu98, 11, gnu11, 14, gnu14, 17, gnu17, 20, gnu20]
+        cppstd: [None, 98, gnu98, 11, gnu11, 14, gnu14, 17, gnu17, 20, gnu20, 23, gnu23]
     intel:
         version: ["11", "12", "13", "14", "15", "16", "17", "18", "19", "19.1"]
         update: [None, ANY]
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index a8207a72f..26d1d5cdb 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -9,7 +9,7 @@ on:
 jobs:
   # Deploy release
   deploy:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     container: johnmcfarlane/cnl_ci:gcc-10
     env:
       GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d60a3acc1..ecba4f11b 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -177,7 +177,9 @@ jobs:
 
       - name: Install Brew packages
         if: ( matrix.os-version == 'macos-12' )
-        run: brew install ccache conan ninja
+        run: |
+          brew install ccache conan@1 ninja
+          echo "/usr/local/opt/conan@1/bin:$PATH" >> $GITHUB_PATH
 
       - name: Restore Compiler Cache
         uses: hendrikmuhs/ccache-action@v1
@@ -268,7 +270,7 @@ jobs:
 
       - name: Install Conan
         run: |
-          pip.exe install conan;
+          pip.exe install "conan<2";
 
       - name: Cache Report
         run: |
@@ -301,7 +303,7 @@ jobs:
 
   # Test documentation generation
   doxygen:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     container: johnmcfarlane/cnl_ci:base-21.10
     steps:
       - uses: actions/checkout@v2
@@ -391,7 +393,7 @@ jobs:
 
   # Install on mature Linux distro using only CMake
   install:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
 
diff --git a/.github/workflows/wide-integer.yml b/.github/workflows/wide-integer.yml
index 6f29d7e56..ce9424e6b 100644
--- a/.github/workflows/wide-integer.yml
+++ b/.github/workflows/wide-integer.yml
@@ -8,7 +8,7 @@ on:
 jobs:
   # Check for updates to wide-integer library
   update-check:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     container: johnmcfarlane/cnl_ci:base-21.10
     steps:
       - uses: actions/checkout@v2
diff --git a/test/unit/presentations/cppcon2017.cpp b/test/unit/presentations/cppcon2017.cpp
index f044670f4..6a774d0fc 100644
--- a/test/unit/presentations/cppcon2017.cpp
+++ b/test/unit/presentations/cppcon2017.cpp
@@ -15,29 +15,29 @@
 #include <filesystem>
 #include <type_traits>
 
-namespace filesystem = std::filesystem;
-
 template<typename Rep = int, int Exponent = 0, int Radix = 2>
 using fixed_point = cnl::scaled_integer<Rep, cnl::power<Exponent, Radix>>;
 
-#if (defined(_MSC_VER) && _MSC_VER < 1932)  || (defined(__GNUC__) && __cplusplus < 201703L) // wg21.link/LWG3657
+#if (defined(_MSC_VER) && _MSC_VER < 1932) || (defined(__GNUC__) && __cplusplus < 201703L)  // wg21.link/LWG3657
 template<>
-struct std::hash<filesystem::path> {
-    auto operator()(filesystem::path const& p) const
+struct std::hash<std::filesystem::path> {
+    auto operator()(std::filesystem::path const& p) const
     {
-        return filesystem::hash_value(p);
+        return std::filesystem::hash_value(p);
     }
 };
 #endif
 
+#if (defined(__clang__) && (__clang_major__ > 14))  // wg21.link/LWG3657
 namespace a {
     using std::unique_ptr;
     using std::unordered_map;
     using byte = std::uint8_t;
 
     // NOLINTNEXTLINE(cppcoreguidelines-avoid-c-arrays,cppcoreguidelines-avoid-non-const-global-variables)
-    unordered_map<filesystem::path, unique_ptr<byte[]>> cache;
+    unordered_map<std::filesystem::path, unique_ptr<byte[]>> cache;
 }
+#endif
 
 namespace b {
     void f()
diff --git a/test/unit/presentations/cppdub2018.cpp b/test/unit/presentations/cppdub2018.cpp
index 0a9e84076..f78c06e95 100644
--- a/test/unit/presentations/cppdub2018.cpp
+++ b/test/unit/presentations/cppdub2018.cpp
@@ -16,30 +16,30 @@
 #include <filesystem>
 #include <type_traits>
 
-namespace filesystem = std::filesystem;
-
 using cnl::make_scaled_integer;
 using cnl::power;
 using cnl::scaled_integer;
 
-#if (defined(_MSC_VER) && _MSC_VER < 1932)  || (defined(__GNUC__) && __cplusplus < 201703L) // wg21.link/LWG3657
+#if (defined(_MSC_VER) && _MSC_VER < 1932) || (defined(__GNUC__) && __cplusplus < 201703L)  // wg21.link/LWG3657
 template<>
-struct std::hash<filesystem::path> {
-    auto operator()(filesystem::path const& p) const
+struct std::hash<std::filesystem::path> {
+    auto operator()(std::filesystem::path const& p) const
     {
-        return filesystem::hash_value(p);
+        return std::filesystem::hash_value(p);
     }
 };
 #endif
 
+#if (defined(__clang__) && (__clang_major__ > 14))  // wg21.link/LWG3657
 namespace a {
     using std::unique_ptr;
     using std::unordered_map;
     using byte = std::uint8_t;
 
     // NOLINTNEXTLINE(cppcoreguidelines-avoid-c-arrays,cppcoreguidelines-avoid-non-const-global-variables)
-    unordered_map<filesystem::path, unique_ptr<byte[]>> cache;
+    unordered_map<std::filesystem::path, unique_ptr<byte[]>> cache;
 }
+#endif
 
 namespace b {
 #if defined(CNL_IOSTREAMS_ENABLED)