diff --git a/Readme.md b/Readme.md
index f419427..4602fde 100644
--- a/Readme.md
+++ b/Readme.md
@@ -9,8 +9,9 @@ configuration using the schemas from the registry maintained by the
 
 It is inspired by and similar to [Kubeval](https://github.com/instrumenta/kubeval), but with the
 following improvements:
- * **high performance**: will validate & download manifests over multiple routines
- * support for **Kubernetes CRDs**
+ * **high performance**: will validate & download manifests over multiple routines, caching
+   downloaded files in memory
+ * configurable list of schemas registries, enabling validating Kubernetes custom resources (CRDs)
 
 ### A small overview of Kubernetes manifest validation
 
diff --git a/cmd/openapi2jsonschema/main.py b/cmd/openapi2jsonschema/main.py
index 746f9d8..95f7ebb 100755
--- a/cmd/openapi2jsonschema/main.py
+++ b/cmd/openapi2jsonschema/main.py
@@ -1,5 +1,6 @@
 #!/usr/bin/env python
 
+# Derived from https://github.com/instrumenta/openapi2jsonschema
 import yaml
 import json
 import sys
diff --git a/go.mod b/go.mod
index a720985..2676f7c 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,6 @@ module github.com/yannh/kubeconform
 go 1.14
 
 require (
-	github.com/instrumenta/kubeval v0.0.0-20200515185822-7721cbec724c
 	github.com/xeipuuv/gojsonschema v1.2.0
 	gopkg.in/yaml.v2 v2.3.0
 	sigs.k8s.io/yaml v1.2.0