diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 916f2c8..acb8058 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -24,7 +24,6 @@ jobs:
       fail-fast: false
       matrix:
         version:
-          - '1.3'
           - '1.6'
           - '1'
         os:
diff --git a/Project.toml b/Project.toml
index 4b7173e..f08db0a 100644
--- a/Project.toml
+++ b/Project.toml
@@ -23,7 +23,7 @@ Parameters = "0.12"
 PlanningDomains = "0.1.3"
 Random = "<0.0.1, 1"
 StatsBase = "0.33, 0.34"
-julia = "1.3"
+julia = "1.6"
 
 [extras]
 PlanningDomains = "34fa33c8-33e3-4e77-bac8-de592315aba2"