diff --git a/phreeqc3-examples/CMakeLists.txt b/phreeqc3-examples/CMakeLists.txt
index 4da5d523..64a40b1b 100644
--- a/phreeqc3-examples/CMakeLists.txt
+++ b/phreeqc3-examples/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.9)
+cmake_minimum_required (VERSION 3.10)
 
 SET(phreeqc_EXAMPLES
 co2.dat