diff --git a/.ci/jobs/elastic+helm-charts+master+template-lint-python.yml b/.ci/jobs/elastic+helm-charts+master+template-lint-python.yml
index 17a91b0cd..25048d9e4 100644
--- a/.ci/jobs/elastic+helm-charts+master+template-lint-python.yml
+++ b/.ci/jobs/elastic+helm-charts+master+template-lint-python.yml
@@ -11,7 +11,7 @@
         type: slave
         name: label
         values:
-        - docker&&virtual
+        - docker&&virtual&&ubuntu-18.04
     builders:
     - shell: |-
         #!/usr/local/bin/runbld
diff --git a/.ci/jobs/elastic+helm-charts+pull-request+lint-python.yml b/.ci/jobs/elastic+helm-charts+pull-request+lint-python.yml
index 5b696a139..5ec00f723 100644
--- a/.ci/jobs/elastic+helm-charts+pull-request+lint-python.yml
+++ b/.ci/jobs/elastic+helm-charts+pull-request+lint-python.yml
@@ -11,7 +11,7 @@
         type: slave
         name: label
         values:
-        - docker&&virtual
+        - docker&&virtual&&ubuntu-18.04
     builders:
     - shell: |-
         #!/usr/local/bin/runbld
diff --git a/helpers/common.mk b/helpers/common.mk
index 6334908df..8ced63fca 100644
--- a/helpers/common.mk
+++ b/helpers/common.mk
@@ -29,7 +29,7 @@ lint: ## Lint helm templates
 
 .PHONY: lint-python
 lint-python: ## Lint python scripts
-	black --diff --check .
+	black --diff --check --exclude='ve/|venv/' .
 
 .PHONY: pytest
 pytest: ## Run python tests