diff --git a/.ci/test-matrix.yml b/.ci/test-matrix.yml
index a1b5e7e8..9758aa5f 100644
--- a/.ci/test-matrix.yml
+++ b/.ci/test-matrix.yml
@@ -1,18 +1,18 @@
 ---
 ELASTICSEARCH_VERSION:
-  - 6.4.2
-  - 6.3.2
-  - 6.1.4
-  - 6.0.1
+- 6.4.2
+- 6.3.2
+- 6.1.4
+- 6.0.1
 
 
 
 PYTHON_VERSION:
-  - 3
-  - 2.7
-  - 2.6
+- 3
+- 2.7
+- 2.6
 
 exclude:
-  # since a base image for python2.6 doens't exist i need to create one.
-  - PYTHON_VERSION: 2.6
+# since a base image for python2.6 doens't exist i need to create one.
+- PYTHON_VERSION: 2.6