diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 32f8a279b77c0ee6798a6f1ba08723dc2df419f0..46d6c2f57eb04c13d580e96b3786c541b9ec2356 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,18 +1,3 @@
-Python 2.6:
-  script:
-  - py_version=2.6
-  - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-test-py-project.sh
-  - export REQUIREMENTS_TXT=requirements.dev.txt
-  - ". ./build-and-test-py-project.sh"
-  tags:
-  - python2.6
-  - linux
-  except:
-  - tags
-  artifacts:
-    reports:
-      junit: test/pytest.xml
-
 Python 2.6:
   script:
   - py_version=2.6
@@ -43,29 +28,14 @@ Python 2.7:
     reports:
       junit: test/pytest.xml
 
-Python 3.6:
-  script:
-  - py_version=3.6
-  - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-test-py-project.sh
-  - export REQUIREMENTS_TXT=requirements.dev.txt
-  - ". ./build-and-test-py-project.sh"
-  tags:
-  - python3.6
-  - linux
-  except:
-  - tags
-  artifacts:
-    reports:
-      junit: test/pytest.xml
-
-Python 3.7:
+Python 3:
   script:
-  - py_version=3.7
+  - py_version=3
   - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-test-py-project.sh
   - export REQUIREMENTS_TXT=requirements.dev.txt
   - ". ./build-and-test-py-project.sh"
   tags:
-  - python3.7
+  - python3
   - linux
   except:
   - tags
@@ -78,7 +48,7 @@ Flake8:
   - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/prepare-and-run-flake8.sh
   - ". ./prepare-and-run-flake8.sh pudb test"
   tags:
-  - python3.5
+  - python3
   except:
   - tags
 
@@ -88,6 +58,6 @@ Documentation:
   - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-docs.sh
   - ". ./build-docs.sh"
   tags:
-  - python3.5
+  - python3
   only:
   - master
diff --git a/pudb/settings.py b/pudb/settings.py
index 2f2f1f6a05484ef00a30bb83d2969626ebd494cc..98a9f5ba4ea99801b4e2ac7823f499da191d2974 100644
--- a/pudb/settings.py
+++ b/pudb/settings.py
@@ -159,7 +159,7 @@ def edit_config(ui, conf_dict):
 
     def _update_line_numbers():
         for sl in ui.source:
-                sl._invalidate()
+            sl._invalidate()
 
     def _update_prompt_on_quit():
         pass