diff --git a/.github/workflows/go-test.yml b/.github/workflows/go-test.yml
index 464fd35..05d12aa 100644
--- a/.github/workflows/go-test.yml
+++ b/.github/workflows/go-test.yml
@@ -25,7 +25,7 @@ jobs:
       if: ${{ !startsWith(github.event.head_commit.message, 'Release') }}
       run: |
           sudo apt-get update || true 
-          sudo apt-get install -y zsh fish || true
+          sudo apt-get install -y zsh tmux fish || true
           brew install fish tmux bash || true
           export TZ='America/Los_Angeles' # Force the time zone so that test output is consistent
           sudo chmod 0755 -R /usr/share/zsh/ || true  # Work around a weird bug where zsh on ubuntu actions gives that diretory 0777 which makes zsh refuse to start