diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fb0154b96..e02aa05a3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -139,12 +139,12 @@ jobs:
         run: ../../../b2 toolset=$TOOLSET ${{ matrix.suite }} define=CI_SUPPRESS_KNOWN_ISSUES define=SLOW_COMPILER define=BOOST_MATH_RUN_MP_TESTS
         working-directory: ../boost-root/libs/math/test
   ubuntu-focal-no-eh:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     strategy:
       fail-fast: false
       matrix:
-        compiler: [ g++-9, g++-11, clang++-10 ]
-        standard: [ c++14, c++17, c++2a ]
+        compiler: [ g++-13, clang++-19 ]
+        standard: [ c++14, c++17, c++20, c++23 ]
     steps:
       - uses: actions/checkout@v4
         with:
@@ -166,7 +166,7 @@ jobs:
         if: steps.retry1.outcome=='failure'
         run: sudo apt-add-repository -y "ppa:ubuntu-toolchain-r/test"
       - name: Install packages
-        run: sudo apt-get install -y g++-9 g++-11 clang-9 clang-10 libgmp-dev libmpfr-dev libfftw3-dev
+        run: sudo apt-get install -y g++-13 clang-19 libgmp-dev libmpfr-dev libfftw3-dev
       - name: Checkout main boost
         run: git clone -b develop --depth 1 https://github.com/boostorg/boost.git ../boost-root
       - name: Update tools/boostdep
@@ -408,11 +408,11 @@ jobs:
       - name: Test
         run: C:\\tools\\cygwin\\bin\\bash -l -c 'cd $(cygpath -u "$GITHUB_WORKSPACE")/../boost-root/libs/math/test && ../../../b2 toolset=$TOOLSET ${{ matrix.suite }} define=CI_SUPPRESS_KNOWN_ISSUES define=SLOW_COMPILER'
   standalone-compile-tests-gcc:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     strategy:
       fail-fast: false
       matrix:
-        compiler: [ g++-10 ]
+        compiler: [ g++-13 ]
     steps:
       - uses: actions/checkout@v4
         with:
@@ -432,7 +432,7 @@ jobs:
         if: steps.retry1.outcome=='failure'
         run: sudo apt-add-repository -y "ppa:ubuntu-toolchain-r/test"
       - name: Install packages
-        run: sudo apt-get install -y g++-10 libgmp-dev libmpfr-dev libfftw3-dev
+        run: sudo apt-get install -y g++-13 libgmp-dev libmpfr-dev libfftw3-dev
       - name: Checkout main boost
         run: git clone -b develop --depth 1 https://github.com/boostorg/boost.git ../boost-root
       - name: Update tools/boostdep
@@ -442,17 +442,17 @@ jobs:
         run: cp -r $GITHUB_WORKSPACE/* libs/math
         working-directory: ../boost-root
       - name: Run CMake
-        run: cmake -DBUILD_TESTING=1 -DCMAKE_CXX_COMPILER=g++-10 .
+        run: cmake -DBUILD_TESTING=1 -DCMAKE_CXX_COMPILER=g++-13 .
         working-directory: ../boost-root/libs/math
       - name: Run Compile Tests
         run: make -j$((`nproc`+1))
         working-directory: ../boost-root/libs/math
   standalone-compile-tests-clang:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     strategy:
       fail-fast: false
       matrix:
-        compiler: [ clang++-10 ]
+        compiler: [ clang++-19 ]
     steps:
       - uses: actions/checkout@v4
         with:
@@ -472,7 +472,7 @@ jobs:
         if: steps.retry1.outcome=='failure'
         run: sudo apt-add-repository -y "ppa:ubuntu-toolchain-r/test"
       - name: Install packages
-        run: sudo apt-get install -y clang-10 libgmp-dev libmpfr-dev libfftw3-dev libtbb-dev
+        run: sudo apt-get install -y clang-19 libgmp-dev libmpfr-dev libfftw3-dev libtbb-dev
       - name: Checkout main boost
         run: git clone -b develop --depth 1 https://github.com/boostorg/boost.git ../boost-root
       - name: Update tools/boostdep
@@ -482,18 +482,18 @@ jobs:
         run: cp -r $GITHUB_WORKSPACE/* libs/math
         working-directory: ../boost-root
       - name: Run CMake
-        run: cmake -DBUILD_TESTING=1 -DCMAKE_CXX_COMPILER=clang++-10 .
+        run: cmake -DBUILD_TESTING=1 -DCMAKE_CXX_COMPILER=clang++-19 .
         working-directory: ../boost-root/libs/math
       - name: Run Compile Tests
         run: make -j$((`nproc`+1))
         working-directory: ../boost-root/libs/math
   standalone-gcc:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     strategy:
       fail-fast: false
       matrix:
-        compiler: [ g++-10 ]
-        standard: [ c++14, c++17, c++20 ]
+        compiler: [ g++-13 ]
+        standard: [ c++14, c++17, c++20, c++23 ]
         suite: [ github_ci_block_1, github_ci_block_2 ]
     steps:
       - uses: actions/checkout@v4
@@ -516,7 +516,7 @@ jobs:
         if: steps.retry1.outcome=='failure'
         run: sudo apt-add-repository -y "ppa:ubuntu-toolchain-r/test"
       - name: Install packages
-        run: sudo apt-get install -y g++-10 libgmp-dev libmpfr-dev libfftw3-dev
+        run: sudo apt-get install -y g++-13 libgmp-dev libmpfr-dev libfftw3-dev
       - name: Checkout main boost
         run: git clone -b develop --depth 1 https://github.com/boostorg/boost.git ../boost-root
       - name: Update tools/boostdep
diff --git a/include/boost/math/tools/big_constant.hpp b/include/boost/math/tools/big_constant.hpp
index 0d54976bc..8e731c090 100644
--- a/include/boost/math/tools/big_constant.hpp
+++ b/include/boost/math/tools/big_constant.hpp
@@ -80,11 +80,15 @@ inline constexpr T make_big_value(largest_float, const char* s, std::false_type
 //
 // For constants which might fit in a long double (if it's big enough):
 //
+// Note that gcc-13 has std::is_convertible<long double, std::float64_t>::value false, likewise
+// std::is_constructible<std::float64_t, long double>::value, even though the conversions do
+// actually work.  Workaround is the || std::is_floating_point<T>::value part which thankfully is true.
+//
 #define BOOST_MATH_BIG_CONSTANT(T, D, x)\
    boost::math::tools::make_big_value<T>(\
       BOOST_MATH_LARGEST_FLOAT_C(x), \
       BOOST_MATH_STRINGIZE(x), \
-      std::integral_constant<bool, (std::is_convertible<boost::math::tools::largest_float, T>::value) && \
+      std::integral_constant<bool, (std::is_convertible<boost::math::tools::largest_float, T>::value || std::is_floating_point<T>::value) && \
       ((D <= boost::math::tools::numeric_traits<boost::math::tools::largest_float>::digits) \
           || std::is_floating_point<T>::value \
           || (boost::math::tools::numeric_traits<T>::is_specialized && \
diff --git a/include/boost/math/tools/test_value.hpp b/include/boost/math/tools/test_value.hpp
index 2cdc1a02a..c44fe0528 100644
--- a/include/boost/math/tools/test_value.hpp
+++ b/include/boost/math/tools/test_value.hpp
@@ -118,7 +118,7 @@ inline T create_test_value(largest_float, const char* str, const std::false_type
     std::numeric_limits<T>::is_specialized &&\
       (std::numeric_limits<T>::radix == 2)\
         && (std::numeric_limits<T>::digits <= BOOST_MATH_TEST_LARGEST_FLOAT_DIGITS)\
-        && std::is_convertible<largest_float, T>::value>(),\
+        && (std::is_convertible<largest_float, T>::value || std::is_floating_point<T>::value)>(),\
   std::integral_constant<bool, \
     std::is_constructible<T, const char*>::value>()\
 )
diff --git a/test/Jamfile.v2 b/test/Jamfile.v2
index 4adb29d16..4d630fe9e 100644
--- a/test/Jamfile.v2
+++ b/test/Jamfile.v2
@@ -35,11 +35,6 @@ obj no_eh : noeh_support.cpp : <library>/boost/config//boost_config ;
 
 project
     : requirements
-      <library>/boost/math//boost_math
-      <library>/boost/multiprecision//boost_multiprecision
-      <library>/boost/test//included
-      <library>/boost/type_index//boost_type_index
-      <library>/boost/ublas//boost_ublas
       $(OBJ_REMOVAL_OPTIONS)
       <toolset>acc:<cxxflags>+W2068,2461,2236,4070,4069
       <toolset>intel-win:<cxxflags>-nologo
diff --git a/test/test_hermite.hpp b/test/test_hermite.hpp
index 8f7c55ff1..821b39ee2 100644
--- a/test/test_hermite.hpp
+++ b/test/test_hermite.hpp
@@ -23,7 +23,7 @@
 #include <boost/math/special_functions/math_fwd.hpp>
 #include <boost/math/special_functions/hermite.hpp>
 #include <boost/math/constants/constants.hpp>
-#include <boost/array.hpp>
+#include <array>
 #include "functor.hpp"
 
 #include "handle_test_result.hpp"