diff --git a/indra/doxygen/CMakeLists.txt b/indra/doxygen/CMakeLists.txt
index 84188bd32f9592762a34fc9d9ebc23006b33eff3..616b5cd09c9b81044f03fde6e7ef7d598638b5fb 100644
--- a/indra/doxygen/CMakeLists.txt
+++ b/indra/doxygen/CMakeLists.txt
@@ -4,7 +4,7 @@
 # other commands to guarantee full compatibility
 # with the version specified
 ## prior to 2.8, the add_custom_target commands used in setting the version did not work correctly
-cmake_minimum_required(VERSION 2.8.8 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.8.0 FATAL_ERROR)
 
 set(ROOT_PROJECT_NAME "SecondLife" CACHE STRING
     "The root project/makefile/solution name. Defaults to SecondLife.")