diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 5f54d58..b13e7b6 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -24,7 +24,7 @@ jobs:
       matrix:
         version:
           - '1.10'
-          - '1.6'
+          - '1.9'
           - 'nightly'
         os:
           - ubuntu-latest
diff --git a/Project.toml b/Project.toml
index 0ff4cb6..cdd7e33 100644
--- a/Project.toml
+++ b/Project.toml
@@ -17,7 +17,7 @@ Tables = "bd369af6-aec1-5ad0-b16a-f7cc5008161c"
 DataFrames = "1"
 GeoInterface = "1"
 GeometryOps = "0.1"
-julia = "1.6.7"
+julia = "1.9"
 
 [extras]
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"