diff --git a/test_tracetools/CMakeLists.txt b/test_tracetools/CMakeLists.txt
index 42e467bb..69330a91 100644
--- a/test_tracetools/CMakeLists.txt
+++ b/test_tracetools/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.5)
+cmake_minimum_required(VERSION 3.20)
 project(test_tracetools)
 
 # Default to C++17
diff --git a/tracetools/CMakeLists.txt b/tracetools/CMakeLists.txt
index 7cb6fced..fbddabe7 100644
--- a/tracetools/CMakeLists.txt
+++ b/tracetools/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.5)
+cmake_minimum_required(VERSION 3.20)
 project(tracetools)
 
 # Default to C++17