diff --git a/UPGRADE.md b/UPGRADE.md
index 9d8be56..20f397d 100644
--- a/UPGRADE.md
+++ b/UPGRADE.md
@@ -10,6 +10,10 @@
 2. Run `composer update shopsys/deployment`
 3. Check files in mentioned pull requests and if you have any of them extended in your project, apply changes manually
 
+## Upgrade from v5.0.0 to v5.1.0
+
+- deploy script now automatically runs `build-deploy-part-3-non-blocking` Phing target after maintenance page is turned off, if available
+
 ## Upgrade from v4.6.1 to v5.0.0
 
 - remove files that are already part of project-base by default ([#66](https://github.com/shopsys/deployment/pull/66))
diff --git a/deploy/parts/deploy.sh b/deploy/parts/deploy.sh
index ad4ed78..a9c421e 100644
--- a/deploy/parts/deploy.sh
+++ b/deploy/parts/deploy.sh
@@ -214,6 +214,11 @@ runCommand "FAILED" "kubectl exec ${RUNNING_WEBSERVER_PHP_FPM_POD} --namespace=$
 echo -n "Clean storefront cache (queries and translations) "
 runCommand "FAILED" "kubectl exec ${RUNNING_WEBSERVER_PHP_FPM_POD} --namespace=${PROJECT_NAME} -- ./phing clean-redis-storefront"
 
+if kubectl exec ${RUNNING_WEBSERVER_PHP_FPM_POD} --namespace=${PROJECT_NAME} -- ./phing -l 2>/dev/null | grep -q "build-deploy-part-3-non-blocking"; then
+    echo -n "Run non-blocking post-deploy tasks "
+    runCommand "FAILED" "kubectl exec ${RUNNING_WEBSERVER_PHP_FPM_POD} --namespace=${PROJECT_NAME} -- ./phing build-deploy-part-3-non-blocking"
+fi
+
 if [ -z ${DISABLE_WEBSITE_RUNNING_CHECK} ]; then
     DISABLE_WEBSITE_RUNNING_CHECK=false
 fi