diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f0411d3..2901602 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -50,7 +50,7 @@ jobs:
                   check-latest: true
             - name: Install sendmail
               run: |
-                sudo apt-get -y update && sudo apt-get -y upgrade && sudo DEBIAN_FRONTEND=noninteractive apt-get -y install nullmailer && which sendmail
+                sudo apt-get -y update && sudo DEBIAN_FRONTEND=noninteractive apt-get -y install nullmailer && which sendmail
             - name: Run go test
               if: success()
               run: |