diff --git a/.github/workflows/linux_build.yml b/.github/workflows/linux_build.yml
index 304d257a..f6019463 100644
--- a/.github/workflows/linux_build.yml
+++ b/.github/workflows/linux_build.yml
@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 jobs:
   Linux:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     strategy:
       matrix:
         compiler: [ gcc, clang ]
diff --git a/ci-scripts/linux/tahoma-install.sh b/ci-scripts/linux/tahoma-install.sh
index cbb25b4b..e847072d 100755
--- a/ci-scripts/linux/tahoma-install.sh
+++ b/ci-scripts/linux/tahoma-install.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
-sudo add-apt-repository --yes ppa:beineri/opt-qt-5.15.2-bionic
+sudo add-apt-repository --yes ppa:beineri/opt-qt-5.15.2-focal
 sudo apt-get update
 sudo apt-get install -y cmake liblzo2-dev liblz4-dev libfreetype6-dev libpng-dev libegl1-mesa-dev libgles2-mesa-dev libglew-dev freeglut3-dev qt515script libsuperlu-dev qt515svg qt515tools qt515multimedia wget libboost-all-dev liblzma-dev libjson-c-dev libjpeg-turbo8-dev libturbojpeg0-dev libglib2.0-dev qt515serialport
 # Removed: libopenjpeg-dev 
diff --git a/toonz/sources/CMakeLists.txt b/toonz/sources/CMakeLists.txt
index 6b4466d2..d1e2a935 100644
--- a/toonz/sources/CMakeLists.txt
+++ b/toonz/sources/CMakeLists.txt
@@ -1,8 +1,5 @@
-if(WIN32 AND ${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.25.0") 
-    message("Enabling CMP0141")
-    cmake_policy(SET CMP0141 NEW)
-    set(CMAKE_POLICY_DEFAULT_CMP0141 NEW)
-endif()
+cmake_policy(SET CMP0141 NEW)
+set(CMAKE_POLICY_DEFAULT_CMP0141 NEW)
 
 cmake_minimum_required(VERSION 2.8.11)