diff --git a/.github/workflows/test-linux-mac.yml b/.github/workflows/test-linux-mac.yml
index df02372..d231f76 100644
--- a/.github/workflows/test-linux-mac.yml
+++ b/.github/workflows/test-linux-mac.yml
@@ -15,19 +15,19 @@ jobs:
       fail-fast: false
       matrix:
         version:
-          - "1.6"
-          - "1.11"
+          - "1.10"
+          - "1"
           - "nightly"
         os:
           - ubuntu-latest
-          - macos-13
+          - macos-15-intel
         arch:
           - x64
         include:
-          - os: macos-14
+          - os: macos-latest
             arch: aarch64
-            version: "1.11"
-          - os: macos-14
+            version: "1.10"
+          - os: macos-latest
             arch: aarch64
             version: "nightly"
     steps:
@@ -38,12 +38,6 @@ jobs:
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
-      - name: Set up GCC 10 on Ubuntu and Julia 1.6
-        if: matrix.os == 'ubuntu-latest' && matrix.version == '1.6'
-        run: |
-          sudo apt-get install -y gcc-10 g++-10
-          sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-10 10
-          sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-10 10
       - name: Build and test
         env:
           body: ${{ github.event.pull_request.body }}
@@ -52,14 +46,11 @@ jobs:
           if [[ ! "${package}" =~ ^https:// ]]; then
             package="https://github.com/JuliaInterop/CxxWrap.jl.git"
           fi
-          if [[ "$OSTYPE" != "darwin"* ]]; then
-            rm -f /opt/hostedtoolcache/julia/1.6*/x64/lib/julia/libstdc++.so.6
-          fi
           mkdir build && cd build
           CXXFLAGS=-ftemplate-backtrace-limit=0 cmake -DCMAKE_INSTALL_PREFIX=$HOME/install -DAPPEND_OVERRIDES_TOML=ON -DCMAKE_BUILD_TYPE=Debug ..
           VERBOSE=ON cmake --build . --config Debug --target install
           wget https://github.com/JuliaRegistries/General/raw/refs/heads/master/jll/L/libcxxwrap_julia_jll/Versions.toml
-          jllversion=0.14.2 #$(grep '\["' Versions.toml | tail -n 1 | sed -E 's/\["([0-9]+\.[0-9]+\.[0-9]+)\+[^"]*"\]/\1/g')
+          jllversion=$(grep '\["' Versions.toml | tail -n 1 | sed -E 's/\["([0-9]+\.[0-9]+\.[0-9]+)\+[^"]*"\]/\1/g')
           cd lib
           if [ ! -f libcxxwrap_julia.${jllversion}.dylib ]; then
             ln -s libcxxwrap_julia.*.*.*.* libcxxwrap_julia.${jllversion}.dylib
diff --git a/.github/workflows/test-win.yml b/.github/workflows/test-win.yml
index ea4f07d..4925d82 100644
--- a/.github/workflows/test-win.yml
+++ b/.github/workflows/test-win.yml
@@ -16,8 +16,8 @@ jobs:
       fail-fast: false
       matrix:
         version:
-          - "1.7"
-          - "1.11"
+          - "1.10"
+          - "1"
           - "nightly"
         os:
           - windows-latest
diff --git a/examples/inheritance.cpp b/examples/inheritance.cpp
index 5061e88..73a2d06 100644
--- a/examples/inheritance.cpp
+++ b/examples/inheritance.cpp
@@ -180,6 +180,25 @@ namespace virtualsolver
   };
 }
 
+struct Parent {
+    virtual std::string name() const { return "Parent"; }
+    virtual ~Parent() = default;
+};
+
+struct DerivedA : public Parent {
+    std::string name() const override { return "DerivedA"; }
+};
+
+struct DerivedB : public Parent {
+    std::string name() const override { return "DerivedB"; }
+};
+
+
+Parent* make_a() { return new DerivedA(); }
+Parent* make_b() { return new DerivedB(); }
+const Parent* make_const_a() { return new const DerivedA(); }
+const Parent* make_const_b() { return new const DerivedB(); }
+
 namespace jlcxx
 {
   // Needed for upcasting
@@ -196,6 +215,9 @@ namespace jlcxx
   template<> struct IsMirroredType<StaticBase> : std::false_type { };
   template<> struct IsMirroredType<StaticDerived> : std::false_type { };
   template<> struct SuperType<StaticDerived> { typedef StaticBase type; };
+
+  template<> struct SuperType<DerivedA> { typedef Parent type; };
+  template<> struct SuperType<DerivedB> { typedef Parent type; };
 }
 
 JLCXX_MODULE define_types_module(jlcxx::Module& types)
@@ -230,6 +252,20 @@ JLCXX_MODULE define_types_module(jlcxx::Module& types)
     .constructor<int, double>()
     .method("getData", &VirtualCfunctionExtended::getData)
     .method("set_callback", &VirtualCfunctionExtended::set_callback);
+
+  types.add_type<Parent>("Parent")
+        .method("name", &Parent::name);
+
+  types.add_type<DerivedA>("DerivedA", jlcxx::julia_base_type<Parent>())
+      .method("name", &DerivedA::name);
+
+  types.add_type<DerivedB>("DerivedB", jlcxx::julia_base_type<Parent>())
+      .method("name", &DerivedB::name);
+
+  types.method("make_a", &make_a);
+  types.method("make_b", &make_b);
+  types.method("make_const_a", &make_const_a);
+  types.method("make_const_b", &make_const_b);
 }
 
 JLCXX_MODULE define_vsolver_module(jlcxx::Module& vsolver_mod)
diff --git a/include/jlcxx/jlcxx_config.hpp b/include/jlcxx/jlcxx_config.hpp
index dce3950..bfee421 100644
--- a/include/jlcxx/jlcxx_config.hpp
+++ b/include/jlcxx/jlcxx_config.hpp
@@ -16,7 +16,7 @@
 
 #define JLCXX_VERSION_MAJOR 0
 #define JLCXX_VERSION_MINOR 14
-#define JLCXX_VERSION_PATCH 5
+#define JLCXX_VERSION_PATCH 6
 
 // From https://stackoverflow.com/questions/5459868/concatenate-int-to-string-using-c-preprocessor
 #define __JLCXX_STR_HELPER(x) #x