diff --git a/CMakeLists.txt b/CMakeLists.txt
index 716e493..fb73ed6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,7 @@
 include(ExternalProject)
 include(ProcessorCount)
 
-cmake_minimum_required(VERSION 3.16 FATAL_ERROR)  # Ensure user has a compatible version of CMake
+cmake_minimum_required(VERSION 3.5 FATAL_ERROR)  # Ensure user has a compatible version of CMake
 
 project(ApriltagCuda LANGUAGES CUDA CXX)  # Set project name and specify the languages used