diff --git a/CMakeLists.txt b/CMakeLists.txt
index 51057f81..e5956cd0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,6 +10,9 @@ set(CMAKE_CXX_STANDARD 14)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
+# Warn on CMake API deprecations
+set(CMAKE_WARN_DEPRECATED ON)
+
 # Signify where the module directories are
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${PROJECT_SOURCE_DIR}/CMakeModules)