diff --git a/.github/workflows/ubuntu-rvm.yml b/.github/workflows/ubuntu-rvm.yml
index b807d35d0..5b5cf8391 100644
--- a/.github/workflows/ubuntu-rvm.yml
+++ b/.github/workflows/ubuntu-rvm.yml
@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby: [ 'jruby-head', 'jruby-9.2.8.0', 'truffleruby', 'ruby-head', '2.2.10' ]
+        ruby: [ 'jruby-head', 'jruby-9.2.8.0', 'ruby-head', '2.2.10' ]
     steps:
     - uses: actions/checkout@master
     - name: Set up RVM