diff --git a/CMakeLists.txt b/CMakeLists.txt
index e2e48a2b..25bb2178 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.5)
+cmake_minimum_required(VERSION 3.21)
 
 project(catkit2)
 
diff --git a/benchmarks/CMakeLists.txt b/benchmarks/CMakeLists.txt
index bc716bd2..d9b6b0fa 100644
--- a/benchmarks/CMakeLists.txt
+++ b/benchmarks/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.0)
+cmake_minimum_required(VERSION 3.21)
 
 project(catkit2)
 
diff --git a/catkit2/CMakeLists.txt b/catkit2/CMakeLists.txt
index 8968a036..eec0dcac 100644
--- a/catkit2/CMakeLists.txt
+++ b/catkit2/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.5)
+cmake_minimum_required(VERSION 3.21)
 
 project(catkit_bindings)
 
diff --git a/catkit_core/CMakeLists.txt b/catkit_core/CMakeLists.txt
index 7918da90..df475cbe 100644
--- a/catkit_core/CMakeLists.txt
+++ b/catkit_core/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.21)
+cmake_minimum_required(VERSION 3.5)
 
 project(catkit_core)