diff --git a/exttests/cmake/CMakeLists.txt b/exttests/cmake/CMakeLists.txt
index 5bba701..d0edfd7 100644
--- a/exttests/cmake/CMakeLists.txt
+++ b/exttests/cmake/CMakeLists.txt
@@ -3,7 +3,7 @@ CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 
 FIND_PACKAGE(SDL2PP REQUIRED)
 
-SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
+SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17")
 
 INCLUDE_DIRECTORIES(${SDL2PP_INCLUDE_DIRS})
 ADD_EXECUTABLE(cmake-ext-test ../../examples/sprites.cc)
diff --git a/exttests/pkg-config/Makefile b/exttests/pkg-config/Makefile
index 4ca19e1..f19266a 100644
--- a/exttests/pkg-config/Makefile
+++ b/exttests/pkg-config/Makefile
@@ -1,6 +1,6 @@
 CXX?=			g++
 
-CXXFLAGS+=		-std=c++11
+CXXFLAGS+=		-std=c++17
 
 SDL2PP_CFLAGS=	`pkg-config --cflags sdl2pp`
 SDL2PP_LIBS=	`pkg-config --libs sdl2pp`