diff --git a/ci/config.yaml b/ci/config.yaml
index 6d84e5599..739d17259 100644
--- a/ci/config.yaml
+++ b/ci/config.yaml
@@ -1,4 +1,4 @@
-# yaml-language-server: $schema=https://raw.githubusercontent.com/camptocamp/c2cciutils/1.6.18/c2cciutils/schema.json
+# yaml-language-server: $schema=https://raw.githubusercontent.com/camptocamp/c2cciutils/1.6.21/c2cciutils/schema.json
 
 publish:
   docker:
diff --git a/ci/requirements.txt b/ci/requirements.txt
index 198bb3208..f90637ff9 100644
--- a/ci/requirements.txt
+++ b/ci/requirements.txt
@@ -1,4 +1,4 @@
-c2cciutils[checks,publish]==1.6.18
+c2cciutils[checks,publish]==1.6.21
 poetry-dynamic-versioning==1.1.1
 poetry-plugin-export==1.5.0
 poetry-plugin-tweak-dependencies-version==1.5.2