diff --git a/CMakeLists.txt b/CMakeLists.txt
index 39a0f44..7d4a39b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.8)
-project(argparse VERSION 0.1.0 LANGUAGES CXX)
+project(argparse VERSION 1.0.0 LANGUAGES CXX)
 option(ARGPARSE_BUILD_TESTS OFF)
 
 include(GNUInstallDirs)