diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 8b2257018..5a7667c02 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -56,6 +56,8 @@ jobs:
     - name: Prepare Linux (non-fancy)
       if: ${{ contains(matrix.os, 'ubuntu') && !matrix.fancy }}
       run: |
+        # Our minimum supported Rust version (MSRV)
+        rustup default 1.63.0
         sudo rm -rf /var/lib/mysql/ /var/run/mysqld
         sudo mkdir /var/lib/mysql/ /var/run/mysqld/
         sudo chown mysql:mysql /var/lib/mysql/ /var/run/mysqld/