diff --git a/k8s-client.gemspec b/k8s-client.gemspec
index 1f4b395..1800e22 100644
--- a/k8s-client.gemspec
+++ b/k8s-client.gemspec
@@ -27,7 +27,7 @@ Gem::Specification.new do |spec|
   spec.add_runtime_dependency "dry-struct", "~> 0.5.0"
   spec.add_runtime_dependency "dry-types", "~> 0.13.0"
   spec.add_runtime_dependency "recursive-open-struct", "~> 1.1.0"
-  spec.add_runtime_dependency 'hashdiff', '~> 0.3.7'
+  spec.add_runtime_dependency 'hashdiff', '~> 1.0.0'
   spec.add_runtime_dependency 'jsonpath', '~> 0.9.5'
   spec.add_runtime_dependency 'yajl-ruby', '~> 1.4.0'
   spec.add_runtime_dependency "yaml-safe_load_stream", "~> 0.1"
@@ -35,6 +35,6 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "bundler", ">= 1.17", "< 3.0"
   spec.add_development_dependency "rake", "~> 10.0"
   spec.add_development_dependency "rspec", "~> 3.7"
-  spec.add_development_dependency "webmock", "~> 3.4.2"
+  spec.add_development_dependency "webmock", "~> 3.6.2"
   spec.add_development_dependency "rubocop", "~> 0.59"
 end
diff --git a/lib/k8s/util.rb b/lib/k8s/util.rb
index 1ffb060..7bd1442 100644
--- a/lib/k8s/util.rb
+++ b/lib/k8s/util.rb
@@ -98,7 +98,7 @@ def self.recursive_compact(hash_or_array)
     # @param patch_to [Hash] Hash to compute patches against
     # @param patch_from [Hash] New Hash to compute patches "from"
     def self.json_patch(patch_to, patch_from)
-      diffs = HashDiff.diff(patch_to, patch_from, array_path: true)
+      diffs = Hashdiff.diff(patch_to, patch_from, array_path: true)
       ops = []
       # Each diff is like:
       # ["+", ["spec", "selector", "food"], "kebab"]