diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4a674c99e..dba182345 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,6 +11,8 @@ eth_policy()
 
 # project name and version should be set after cmake_policy CMP0048
 set(PROJECT_VERSION "0.6.5")
+# OSX target needed in order to support std::visit
+set(CMAKE_OSX_DEPLOYMENT_TARGET "10.14")
 project(solidity VERSION ${PROJECT_VERSION} LANGUAGES C CXX)
 
 include(TestBigEndian)