diff --git a/unity-command/action.yaml b/unity-command/action.yaml
index 14cd90d..0e6eb09 100644
--- a/unity-command/action.yaml
+++ b/unity-command/action.yaml
@@ -46,6 +46,7 @@ runs:
 
       SERIAL="${{ inputs.serial }}" USERNAME="${{ inputs.email }}" PASSWORD="${{ inputs.password }}" \
       # Activate the license on build.
+      export DOCKER_BUILDKIT=1
       docker build . --secret id=SERIAL,env=SERIAL --secret id=USERNAME,env=USERNAME --secret id=PASSWORD,env=PASSWORD \
       -t ${{ inputs.imageTag }} --build-arg IMAGE=$CONTAINER ${{ github.action_path }}
     shell: bash