diff --git a/openapitools.json b/openapitools.json
index 077c2db..f29b197 100644
--- a/openapitools.json
+++ b/openapitools.json
@@ -2,6 +2,6 @@
   "$schema": "node_modules/@openapitools/openapi-generator-cli/config.schema.json",
   "spaces": 2,
   "generator-cli": {
-    "version": "7.21.0"
+    "version": "7.24.0"
   }
 }
diff --git a/templates/Cargo.mustache b/templates/Cargo.mustache
index 553781c..68a6c2c 100644
--- a/templates/Cargo.mustache
+++ b/templates/Cargo.mustache
@@ -45,6 +45,9 @@ url = "^2.5"
 {{#hasUUIDs}}
 uuid = { version = "^1.8", features = ["serde", "v4"] }
 {{/hasUUIDs}}
+{{#usesChronoTypes}}
+chrono = { version = "^0.4",  features = ["serde"] }
+{{/usesChronoTypes}}
 {{#hyper}}
 {{#hyper0x}}
 hyper = { version = "~0.14", features = ["full"] }
diff --git a/templates/model.mustache b/templates/model.mustache
index ab1630e..4c6c410 100644
--- a/templates/model.mustache
+++ b/templates/model.mustache
@@ -5,7 +5,9 @@ use serde::{Deserialize, Serialize};
 {{#model}}
 {{^isEnum}}{{#vendorExtensions.x-rust-has-byte-array}}
 use serde_with::serde_as;
-{{/vendorExtensions.x-rust-has-byte-array}}{{/isEnum}}
+{{/vendorExtensions.x-rust-has-byte-array}}{{#vendorExtensions.x-rust-has-integer-property-enum}}
+use serde_repr::{Serialize_repr,Deserialize_repr};
+{{/vendorExtensions.x-rust-has-integer-property-enum}}{{/isEnum}}
 {{#isEnum}}
 {{#isInteger}}
 use serde_repr::{Serialize_repr,Deserialize_repr};
@@ -194,6 +196,31 @@ impl Default for {{classname}} {
 {{!-- for properties that are of enum type --}}
 {{#vars}}
 {{#isEnum}}
+{{#isInteger}}
+/// {{{description}}}
+#[repr(i64)]
+#[derive(Clone, Copy, Debug, Eq, PartialEq, Ord, PartialOrd, Hash, Serialize_repr, Deserialize_repr)]
+pub enum {{{enumName}}} {
+{{#allowableValues}}
+{{#enumVars}}
+    {{{name}}} = {{{value}}},
+{{/enumVars}}
+{{/allowableValues}}
+}
+
+impl std::fmt::Display for {{{enumName}}} {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}", match self {
+            {{#allowableValues}}
+            {{#enumVars}}
+            Self::{{{name}}} => "{{{value}}}",
+            {{/enumVars}}
+            {{/allowableValues}}
+        })
+    }
+}
+{{/isInteger}}
+{{^isInteger}}
 /// {{{description}}}
 #[derive(Clone, Copy, Debug, Eq, PartialEq, Ord, PartialOrd, Hash, Serialize, Deserialize)]
 pub enum {{{enumName}}} {
@@ -204,6 +231,7 @@ pub enum {{{enumName}}} {
 {{/enumVars}}
 {{/allowableValues}}
 }
+{{/isInteger}}
 
 impl Default for {{{enumName}}} {
     fn default() -> {{{enumName}}} {