diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7a2da515..d04b97fe 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3,6 +3,8 @@ set(PROJECT_NAME supercell-wx)
 
 include(tools/scwx_config.cmake)
 
+set(CMAKE_OSX_DEPLOYMENT_TARGET 12.0)
+
 scwx_python_setup()
 
 project(${PROJECT_NAME}
diff --git a/tools/conan/profiles/scwx-macos_clang-18 b/tools/conan/profiles/scwx-macos_clang-18
index 70889284..f7a5b0ce 100644
--- a/tools/conan/profiles/scwx-macos_clang-18
+++ b/tools/conan/profiles/scwx-macos_clang-18
@@ -6,3 +6,4 @@ compiler.cppstd=20
 compiler.libcxx=libc++
 compiler.version=18
 os=Macos
+os.version=12.0
diff --git a/tools/conan/profiles/scwx-macos_clang-18_armv8 b/tools/conan/profiles/scwx-macos_clang-18_armv8
index 63c6d597..65d9afd4 100644
--- a/tools/conan/profiles/scwx-macos_clang-18_armv8
+++ b/tools/conan/profiles/scwx-macos_clang-18_armv8
@@ -6,3 +6,4 @@ compiler.cppstd=20
 compiler.libcxx=libc++
 compiler.version=18
 os=Macos
+os.version=12.0