diff --git a/bin/configs/rust-reqwest-petstore.yaml b/bin/configs/rust-reqwest-petstore.yaml
index 1bc1d4c8667..a3cb1b61aba 100644
--- a/bin/configs/rust-reqwest-petstore.yaml
+++ b/bin/configs/rust-reqwest-petstore.yaml
@@ -4,5 +4,5 @@ library: reqwest
 inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore.yaml
 templateDir: modules/openapi-generator/src/main/resources/rust
 additionalProperties:
-  supportAsync: "false"
+  supportAsync: false
   packageName: petstore-reqwest
diff --git a/modules/openapi-generator/src/main/resources/rust/reqwest/api.mustache b/modules/openapi-generator/src/main/resources/rust/reqwest/api.mustache
index fe924ddce19..a369e2cb937 100644
--- a/modules/openapi-generator/src/main/resources/rust/reqwest/api.mustache
+++ b/modules/openapi-generator/src/main/resources/rust/reqwest/api.mustache
@@ -17,7 +17,7 @@ pub struct {{{operationIdCamelCase}}}Params {
     {{#description}}
     /// {{{.}}}
     {{/description}}
-    pub {{{paramName}}}: {{^required}}Option<{{/required}}{{#required}}{{#isNullable}}Option<{{/isNullable}}{{/required}}{{#isString}}String{{/isString}}{{#isUuid}}String{{/isUuid}}{{^isString}}{{^isUuid}}{{^isPrimitiveType}}{{^isContainer}}crate::models::{{/isContainer}}{{/isPrimitiveType}}{{{dataType}}}{{/isUuid}}{{/isString}}{{^required}}>{{/required}}{{#required}}{{#isNullable}}>{{/isNullable}}{{/required}}{{#hasMore}},{{/hasMore}}
+    pub {{{paramName}}}: {{^required}}Option<{{/required}}{{#required}}{{#isNullable}}Option<{{/isNullable}}{{/required}}{{#isString}}{{#isListContainer}}Vec<{{/isListContainer}}String{{#isListContainer}}>{{/isListContainer}}{{/isString}}{{#isUuid}}{{#isListContainer}}Vec<{{/isListContainer}}String{{#isListContainer}}>{{/isListContainer}}{{/isUuid}}{{^isString}}{{^isUuid}}{{^isPrimitiveType}}{{^isContainer}}crate::models::{{/isContainer}}{{/isPrimitiveType}}{{{dataType}}}{{/isUuid}}{{/isString}}{{^required}}>{{/required}}{{#required}}{{#isNullable}}>{{/isNullable}}{{/required}}{{#hasMore}},{{/hasMore}}
 {{#-last}}
 }
 
@@ -88,7 +88,7 @@ pub {{#supportAsync}}async {{/supportAsync}}fn {{{operationId}}}(configuration:
 
 {{/vendorExtensions.x-group-parameters}}
 {{^vendorExtensions.x-group-parameters}}
-pub {{#supportAsync}}async {{/supportAsync}}fn {{{operationId}}}(configuration: &configuration::Configuration, {{#allParams}}{{{paramName}}}: {{^required}}Option<{{/required}}{{#required}}{{#isNullable}}Option<{{/isNullable}}{{/required}}{{#isString}}&str{{/isString}}{{#isUuid}}&str{{/isUuid}}{{^isString}}{{^isUuid}}{{^isPrimitiveType}}{{^isContainer}}crate::models::{{/isContainer}}{{/isPrimitiveType}}{{{dataType}}}{{/isUuid}}{{/isString}}{{^required}}>{{/required}}{{#required}}{{#isNullable}}>{{/isNullable}}{{/required}}{{#hasMore}}, {{/hasMore}}{{/allParams}}) -> Result<{{#supportMultipleResponses}}ResponseContent<{{{operationIdCamelCase}}}Success>{{/supportMultipleResponses}}{{^supportMultipleResponses}}{{^returnType}}(){{/returnType}}{{#returnType}}{{{returnType}}}{{/returnType}}{{/supportMultipleResponses}}, Error<{{{operationIdCamelCase}}}Error>> {
+pub {{#supportAsync}}async {{/supportAsync}}fn {{{operationId}}}(configuration: &configuration::Configuration, {{#allParams}}{{{paramName}}}: {{^required}}Option<{{/required}}{{#required}}{{#isNullable}}Option<{{/isNullable}}{{/required}}{{#isString}}{{#isListContainer}}Vec<{{/isListContainer}}&str{{#isListContainer}}>{{/isListContainer}}{{/isString}}{{#isUuid}}{{#isListContainer}}Vec<{{/isListContainer}}&str{{#isListContainer}}>{{/isListContainer}}{{/isUuid}}{{^isString}}{{^isUuid}}{{^isPrimitiveType}}{{^isContainer}}crate::models::{{/isContainer}}{{/isPrimitiveType}}{{{dataType}}}{{/isUuid}}{{/isString}}{{^required}}>{{/required}}{{#required}}{{#isNullable}}>{{/isNullable}}{{/required}}{{#hasMore}}, {{/hasMore}}{{/allParams}}) -> Result<{{#supportMultipleResponses}}ResponseContent<{{{operationIdCamelCase}}}Success>{{/supportMultipleResponses}}{{^supportMultipleResponses}}{{^returnType}}(){{/returnType}}{{#returnType}}{{{returnType}}}{{/returnType}}{{/supportMultipleResponses}}, Error<{{{operationIdCamelCase}}}Error>> {
 {{/vendorExtensions.x-group-parameters}}
 
     let local_var_client = &configuration.client;