diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 98a1f5b..ab7f689 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -11,7 +11,7 @@ jobs:
   compile:
     strategy:
       matrix:
-        os: [ ubuntu-16.04, ubuntu-18.04, macos-latest, windows-latest ]
+        os: [ ubuntu-18.04, macos-latest, windows-latest ]
 
     name: ${{matrix.os}}
     runs-on: ${{matrix.os}}
diff --git a/.github/workflows/package.yml b/.github/workflows/package.yml
index bc52109..46e0b00 100644
--- a/.github/workflows/package.yml
+++ b/.github/workflows/package.yml
@@ -7,11 +7,8 @@ on:
 jobs:
   # Debian package for ubuntu.
   ubuntu:
-    strategy:
-      matrix:
-        os: [ ubuntu-16.04, ubuntu-18.04 ]
-    name: ${{matrix.os}}
-    runs-on: ${{matrix.os}}
+    name: Ubuntu 18.04
+    runs-on: ubuntu-18.04
     steps:
       - uses: actions/checkout@v1