diff --git a/.gitlab/ci/lava-test.yml b/.gitlab/ci/lava-test.yml
index 0e8256710355846cb80c933b456bda76f7e780c2..5a6f60f5304deee3035770c4dc3496ec19a10431 100644
--- a/.gitlab/ci/lava-test.yml
+++ b/.gitlab/ci/lava-test.yml
@@ -28,6 +28,14 @@
           current_value=" FALSE"
           new_value=" TRUE"
           sed -i "s/$config$current_value/$config$new_value/" config.txt
+          config="MCPUART:"
+          current_value="   1"
+          new_value="   0"
+          sed -i "s/$config$current_value/$config$new_value/" config.txt
+          config="FPGAUART2:"
+          current_value=" 0"
+          new_value=" 1"
+          sed -i "s/$config$current_value/$config$new_value/" config.txt
           zip -r ../cassini-firmware.zip *
           ;;
         *)
diff --git a/.gitlab/lava/n1sdp/ptest.yml.j2 b/.gitlab/lava/n1sdp/ptest.yml.j2
index c82c6a97d990d68e5e2d310ec5970043083fae12..066f668e276bdb244e3a6452f38127f5e1151e51 100644
--- a/.gitlab/lava/n1sdp/ptest.yml.j2
+++ b/.gitlab/lava/n1sdp/ptest.yml.j2
@@ -78,6 +78,11 @@ actions:
     method: new_connection
     connection: uart1
 
+- boot:
+    namespace: uart3
+    method: new_connection
+    connection: uart3
+
 - boot:
     namespace: debian
     connection-namespace: uart1