diff --git a/go/vendor/github.com/go-openapi/analysis/internal/post_go18.go b/go/vendor/github.com/go-openapi/analysis/internal/post_go18.go
new file mode 100644
index 0000000..f96f55c
--- /dev/null
+++ b/go/vendor/github.com/go-openapi/analysis/internal/post_go18.go
@@ -0,0 +1,29 @@
+// +build go1.8
+
+// Copyright 2015 go-swagger maintainers
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package internal
+
+import "net/url"
+
+// PathUnescape provides url.PathUnescape(), with seamless
+// go version support for pre-go1.8
+//
+// TODO: this function is currently defined in go-openapi/swag,
+// but unexported. We might chose to export it, or simple phase
+// out pre-go1.8 support.
+func PathUnescape(path string) (string, error) {
+	return url.PathUnescape(path)
+}