diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 0769feb..37c7925 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -25,7 +25,9 @@ jobs:
 
       - name: Install system deps
         # `libgtk-3-dev` required by crate `gdk-sys`
-        run: sudo apt-get install -y libgtk-3-dev
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libgtk-3-dev
 
       - name: Install Bun dependencies
         run: bun install --frozen-lockfile