diff --git a/CMakeLists.txt b/CMakeLists.txt
index edb9d65a5..1fcf8e1ce 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.18)
 
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
diff --git a/example/CMakeLists.txt b/example/CMakeLists.txt
index 30df75509..1ec0ff9cc 100644
--- a/example/CMakeLists.txt
+++ b/example/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.18)
 
 if(CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_CURRENT_BINARY_DIR AND NOT MSVC_IDE)
   message(FATAL_ERROR "In-source builds are not allowed.
diff --git a/src/nodejs/CMakeLists.txt b/src/nodejs/CMakeLists.txt
index 3d896037a..ab1c123b9 100644
--- a/src/nodejs/CMakeLists.txt
+++ b/src/nodejs/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.18)
 
 message(STATUS "Building node_osrm")