diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3d246dd..f3c7251 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.16)
+cmake_minimum_required(VERSION 3.20)
 project(Browser)
 
 
diff --git a/digitalclock/CMakeLists.txt b/digitalclock/CMakeLists.txt
index 58bd30c..fe95830 100644
--- a/digitalclock/CMakeLists.txt
+++ b/digitalclock/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.16)
+cmake_minimum_required(VERSION 3.20)
 
 project(DigitalClock LANGUAGES CXX)
 
diff --git a/qtermwidget/CMakeLists.txt b/qtermwidget/CMakeLists.txt
index b664834..7870302 100644
--- a/qtermwidget/CMakeLists.txt
+++ b/qtermwidget/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.5 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.20 FATAL_ERROR)
 # CMP0000: Call the cmake_minimum_required() command at the beginning of the top-level
 # CMakeLists.txt file even before calling the project() command.
 # The cmake_minimum_required(VERSION) command implicitly invokes the cmake_policy(VERSION)
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 2dc6ac0..0c34475 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.16)
+cmake_minimum_required(VERSION 3.20)
 
 project(OGBrowser LANGUAGES CXX)