diff --git a/CMakeLists.txt b/CMakeLists.txt
index f0f5ff1dce..614fd4c230 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,7 +23,7 @@ if (EMSCRIPTEN)
 endif()
 
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake")
-set(CMAKE_OSX_DEPLOYMENT_TARGET 10.13)
+set(CMAKE_OSX_DEPLOYMENT_TARGET 10.15)
 
 # Use GNUInstallDirs to allow customisation
 # but set our own default data and bin dir