diff --git a/examples/custom_source/CMakeLists.txt b/examples/custom_source/CMakeLists.txt
index 9498176944a..21463ed51ed 100644
--- a/examples/custom_source/CMakeLists.txt
+++ b/examples/custom_source/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.3 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.10 FATAL_ERROR)
 project(openmc_sources CXX)
 add_library(source SHARED source_ring.cpp)
 find_package(OpenMC REQUIRED)
diff --git a/examples/parameterized_custom_source/CMakeLists.txt b/examples/parameterized_custom_source/CMakeLists.txt
index 3024e90cffa..8232f3b546a 100644
--- a/examples/parameterized_custom_source/CMakeLists.txt
+++ b/examples/parameterized_custom_source/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.3 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.10 FATAL_ERROR)
 project(openmc_sources CXX)
 add_library(parameterized_source SHARED parameterized_source_ring.cpp)
 find_package(OpenMC REQUIRED)
diff --git a/tests/regression_tests/cpp_driver/test.py b/tests/regression_tests/cpp_driver/test.py
index 79c30967cce..b80e82ee0e1 100644
--- a/tests/regression_tests/cpp_driver/test.py
+++ b/tests/regression_tests/cpp_driver/test.py
@@ -20,7 +20,7 @@ def cpp_driver(request):
     openmc_dir = Path(str(request.config.rootdir)) / 'build'
     with open('CMakeLists.txt', 'w') as f:
         f.write(textwrap.dedent("""
-            cmake_minimum_required(VERSION 3.3 FATAL_ERROR)
+            cmake_minimum_required(VERSION 3.10 FATAL_ERROR)
             project(openmc_cpp_driver CXX)
             add_executable(cpp_driver driver.cpp)
             find_package(OpenMC REQUIRED HINTS {})
diff --git a/tests/regression_tests/dagmc/external/test.py b/tests/regression_tests/dagmc/external/test.py
index 7993772e8b6..57bc9ea7fd6 100644
--- a/tests/regression_tests/dagmc/external/test.py
+++ b/tests/regression_tests/dagmc/external/test.py
@@ -25,7 +25,7 @@ def cpp_driver(request):
     openmc_dir = Path(str(request.config.rootdir)) / 'build'
     with open('CMakeLists.txt', 'w') as f:
         f.write(textwrap.dedent("""
-            cmake_minimum_required(VERSION 3.3 FATAL_ERROR)
+            cmake_minimum_required(VERSION 3.10 FATAL_ERROR)
             project(openmc_cpp_driver CXX)
             add_executable(main main.cpp)
             find_package(OpenMC REQUIRED HINTS {})
diff --git a/tests/regression_tests/external_moab/test.py b/tests/regression_tests/external_moab/test.py
index 90bff69ed00..ce4e78a2c25 100644
--- a/tests/regression_tests/external_moab/test.py
+++ b/tests/regression_tests/external_moab/test.py
@@ -32,7 +32,7 @@ def cpp_driver(request):
     openmc_dir = Path(str(request.config.rootdir)) / 'build'
     with open('CMakeLists.txt', 'w') as f:
         f.write(textwrap.dedent("""
-            cmake_minimum_required(VERSION 3.3 FATAL_ERROR)
+            cmake_minimum_required(VERSION 3.10 FATAL_ERROR)
             project(openmc_cpp_driver CXX)
             add_executable(main main.cpp)
             find_package(OpenMC REQUIRED HINTS {})
diff --git a/tests/regression_tests/source_dlopen/test.py b/tests/regression_tests/source_dlopen/test.py
index efe942933dd..88ff9dd8509 100644
--- a/tests/regression_tests/source_dlopen/test.py
+++ b/tests/regression_tests/source_dlopen/test.py
@@ -18,7 +18,7 @@ def compile_source(request):
     openmc_dir = Path(str(request.config.rootdir)) / 'build'
     with open('CMakeLists.txt', 'w') as f:
         f.write(textwrap.dedent("""
-            cmake_minimum_required(VERSION 3.3 FATAL_ERROR)
+            cmake_minimum_required(VERSION 3.10 FATAL_ERROR)
             project(openmc_sources CXX)
             add_library(source SHARED source_sampling.cpp)
             find_package(OpenMC REQUIRED HINTS {})
diff --git a/tests/regression_tests/source_parameterized_dlopen/test.py b/tests/regression_tests/source_parameterized_dlopen/test.py
index c7c5d06b1f9..1cc253528cb 100644
--- a/tests/regression_tests/source_parameterized_dlopen/test.py
+++ b/tests/regression_tests/source_parameterized_dlopen/test.py
@@ -18,7 +18,7 @@ def compile_source(request):
     openmc_dir = Path(str(request.config.rootdir)) / 'build'
     with open('CMakeLists.txt', 'w') as f:
         f.write(textwrap.dedent("""
-            cmake_minimum_required(VERSION 3.3 FATAL_ERROR)
+            cmake_minimum_required(VERSION 3.10 FATAL_ERROR)
             project(openmc_sources CXX)
             add_library(source SHARED parameterized_source_sampling.cpp)
             find_package(OpenMC REQUIRED HINTS {})