diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/ubuntu.yml
index ade3464..0c513e3 100644
--- a/.github/workflows/ubuntu.yml
+++ b/.github/workflows/ubuntu.yml
@@ -18,7 +18,7 @@ jobs:
     env:
       # HOST_ARCH value must match string in Lima download filename
       HOST_ARCH: ${{ matrix.os == 'ubuntu-24.04' && 'x86_64' || (matrix.os == 'ubuntu-24.04-arm' && 'aarch64') || 'unknown' }}
-      LIMA_VERSION: "v1.0.6"
+      LIMA_VERSION: "v1.2.1"
       GUEST_HOST_NAME: "nixsample"
       GUEST_USER: "lima"
     name: NixOS-${{ matrix.guest-arch }} Lima on ${{ matrix.os }}
@@ -42,7 +42,7 @@ jobs:
         id: lima-actions-setup
         with:
           version: ${{ env.LIMA_VERSION }}
-          additional_guestagents: ${{ matrix.os == 'ubuntu-24.04' && 'false' || (matrix.os == 'ubuntu-24.04-arm' && 'true') || 'false' }}
+          additional_guestagents: ${{ matrix.os == 'ubuntu-24.04' && matrix.guest-arch == 'aarch64' && 'true' || (matrix.os == 'ubuntu-24.04-arm' && 'true') || 'false' }}
 
       - name: "Cache ~/.cache/lima"
         uses: actions/cache@v4