diff --git a/.travis.yml b/.travis.yml
index bf8c90f..84b7555 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -54,11 +54,6 @@ jobs:
       arch: arm64
       compiler: gcc
 
-    - os: linux
-      dist: bionic
-      arch: arm64
-      compiler: gcc
-
     - os: osx
       compiler: clang
       osx_image: xcode10.3
@@ -73,6 +68,8 @@ jobs:
 
     - stage: "Coverage"
       os: linux
+      dist: bionic
+      arch: amd64
       compiler: gcc
       script:
         - mkdir coverage
@@ -88,10 +85,3 @@ jobs:
       arch: arm64
 
     - os: osx
-      osx_image: xcode10.3
-
-    - os: osx
-      osx_image: xcode11.6
-
-    - os: osx
-      osx_image: xcode12
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 724e18b..7d8e131 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.1)
+cmake_minimum_required(VERSION 3.11)
 
 include(ExternalProject)