diff --git a/.github/workflows/build-docs.yml b/.github/workflows/build-docs.yml
index ba801c3..6b00def 100644
--- a/.github/workflows/build-docs.yml
+++ b/.github/workflows/build-docs.yml
@@ -26,6 +26,9 @@ jobs:
 
       - name: Install dependencies
         run: |
+          sudo apt-get update -qq
+          sudo apt-get install -y software-properties-common
+          sudo add-apt-repository -y ppa:fish-shell/release-4
           sudo apt-get update -qq
           sudo apt-get install -y pandoc python3-yaml fish