diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 0404faf..a034378 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -18,6 +18,7 @@ jobs:
       fail-fast: false
       matrix:
         version:
+          - '1.3'
           - '1.6'
           - '1'
         os:
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f25b022..6292151 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -17,7 +17,7 @@ test:
   stage: test
   parallel:
     matrix:
-      - CI_JULIA_VERSION: ["1.6", "1"]
+      - CI_JULIA_VERSION: ["1.3", "1.6", "1"]
   extends:
     - .julia.setup
     - .julia.test