diff --git a/.circleci/config.yml b/.circleci/config.yml
index ab886586..61535ae0 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -10,7 +10,7 @@ workflows:
           name: 'test_go_<< matrix.go_version >>'
           matrix:
             parameters:
-              go_version: ['1.13', '1.14', '1.15', '1.16', '1.17']
+              go_version: ['1.15', '1.16', '1.17']
 
 jobs:
   test:
diff --git a/client/v2/common/common.go b/client/v2/common/common.go
index 8e6068e9..2314fd6c 100644
--- a/client/v2/common/common.go
+++ b/client/v2/common/common.go
@@ -241,3 +241,19 @@ func (client *Client) GetRawMsgpack(ctx context.Context, response interface{}, p
 func (client *Client) Post(ctx context.Context, response interface{}, path string, body interface{}, headers []*Header) error {
 	return client.submitForm(ctx, response, path, body, "POST", true /* encodeJSON */, headers)
 }
+
+// Helper function for correctly formatting and escaping URL path parameters.
+// Used in the generated API client code.
+func EscapeParams(params ...interface{}) []interface{} {
+	paramsStr := make([]interface{}, len(params))
+	for i, param := range params {
+		switch v := param.(type) {
+		case string:
+			paramsStr[i] = url.PathEscape(v)
+		default:
+			paramsStr[i] = fmt.Sprintf("%v", v)
+		}
+	}
+
+	return paramsStr
+}