diff --git a/platforms/posix/src/px4/common/lockstep_scheduler/CMakeLists.txt b/platforms/posix/src/px4/common/lockstep_scheduler/CMakeLists.txt
index 15c40a2e99..7b4798c600 100644
--- a/platforms/posix/src/px4/common/lockstep_scheduler/CMakeLists.txt
+++ b/platforms/posix/src/px4/common/lockstep_scheduler/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 2.8.12)
+cmake_minimum_required(VERSION 3.5)
 
 # We want to test the lockstep schedule even if it is not used otherwise.
 px4_add_library(lockstep_scheduler
diff --git a/platforms/posix/src/px4/common/lockstep_scheduler/test/CMakeLists.txt b/platforms/posix/src/px4/common/lockstep_scheduler/test/CMakeLists.txt
index ea779efc9e..4b30be206b 100644
--- a/platforms/posix/src/px4/common/lockstep_scheduler/test/CMakeLists.txt
+++ b/platforms/posix/src/px4/common/lockstep_scheduler/test/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 2.8.12)
+cmake_minimum_required(VERSION 3.5)
 
 add_executable(lockstep_scheduler_test
     src/lockstep_scheduler_test.cpp