diff --git a/modules/openapi-generator/src/main/resources/rust/Cargo.mustache b/modules/openapi-generator/src/main/resources/rust/Cargo.mustache
index 43c8d17fadcb..7532ccd8f316 100644
--- a/modules/openapi-generator/src/main/resources/rust/Cargo.mustache
+++ b/modules/openapi-generator/src/main/resources/rust/Cargo.mustache
@@ -8,6 +8,7 @@ edition = "2018"
 serde = "^1.0"
 serde_derive = "^1.0"
 serde_json = "^1.0"
+serde_repr = "^0.1"
 url = "^2.2"
 {{#hyper}}
 hyper = "~0.11"
diff --git a/modules/openapi-generator/src/main/resources/rust/lib.mustache b/modules/openapi-generator/src/main/resources/rust/lib.mustache
index cdc5287aae73..fb68f4b1a497 100644
--- a/modules/openapi-generator/src/main/resources/rust/lib.mustache
+++ b/modules/openapi-generator/src/main/resources/rust/lib.mustache
@@ -1,5 +1,7 @@
 #[macro_use]
 extern crate serde_derive;
+#[macro_use]
+extern crate serde_repr;
 
 extern crate serde;
 extern crate serde_json;
diff --git a/modules/openapi-generator/src/main/resources/rust/model.mustache b/modules/openapi-generator/src/main/resources/rust/model.mustache
index 974bc54bd100..d47c9178b716 100644
--- a/modules/openapi-generator/src/main/resources/rust/model.mustache
+++ b/modules/openapi-generator/src/main/resources/rust/model.mustache
@@ -5,8 +5,35 @@
 /// {{{classname}}} : {{{description}}}
 {{/description}}
 
+{{!-- for repr(int) enum schemas --}}
+{{#isEnum}}
+{{#isInteger}}
+/// {{{description}}}
+#[repr(i64)]
+#[derive(Clone, Copy, Debug, Eq, PartialEq, Ord, PartialOrd, Hash, Serialize_repr, Deserialize_repr)]
+pub enum {{{classname}}} {
+{{#allowableValues}}
+{{#enumVars}}
+    {{{name}}} = {{{value}}},
+{{/enumVars}}{{/allowableValues}}
+}
+
+impl ToString for {{{classname}}} {
+    fn to_string(&self) -> String {
+        match self {
+            {{#allowableValues}}
+            {{#enumVars}}
+            Self::{{{name}}} => String::from("{{{value}}}"),
+            {{/enumVars}}
+            {{/allowableValues}}
+        }
+    }
+}
+{{/isInteger}}
+{{/isEnum}}
 {{!-- for enum schemas --}}
 {{#isEnum}}
+{{^isInteger}}
 /// {{{description}}}
 #[derive(Clone, Copy, Debug, Eq, PartialEq, Ord, PartialOrd, Hash, Serialize, Deserialize)]
 pub enum {{{classname}}} {
@@ -28,6 +55,7 @@ impl ToString for {{{classname}}} {
         }
     }
 }
+{{/isInteger}}
 {{/isEnum}}
 
 {{!-- for schemas that have a discriminator --}}
diff --git a/samples/client/petstore/rust/hyper/petstore/Cargo.toml b/samples/client/petstore/rust/hyper/petstore/Cargo.toml
index 4bed4953a557..61f1f142aaf2 100644
--- a/samples/client/petstore/rust/hyper/petstore/Cargo.toml
+++ b/samples/client/petstore/rust/hyper/petstore/Cargo.toml
@@ -8,6 +8,7 @@ edition = "2018"
 serde = "^1.0"
 serde_derive = "^1.0"
 serde_json = "^1.0"
+serde_repr = "^0.1"
 url = "^2.2"
 hyper = "~0.11"
 serde_yaml = "0.7"
diff --git a/samples/client/petstore/rust/hyper/petstore/src/lib.rs b/samples/client/petstore/rust/hyper/petstore/src/lib.rs
index a76d822525da..40bbd4a53d93 100644
--- a/samples/client/petstore/rust/hyper/petstore/src/lib.rs
+++ b/samples/client/petstore/rust/hyper/petstore/src/lib.rs
@@ -1,5 +1,7 @@
 #[macro_use]
 extern crate serde_derive;
+#[macro_use]
+extern crate serde_repr;
 
 extern crate serde;
 extern crate serde_json;
diff --git a/samples/client/petstore/rust/reqwest/petstore-async/Cargo.toml b/samples/client/petstore/rust/reqwest/petstore-async/Cargo.toml
index a0c16dfdb530..289fb2ba4f32 100644
--- a/samples/client/petstore/rust/reqwest/petstore-async/Cargo.toml
+++ b/samples/client/petstore/rust/reqwest/petstore-async/Cargo.toml
@@ -8,6 +8,7 @@ edition = "2018"
 serde = "^1.0"
 serde_derive = "^1.0"
 serde_json = "^1.0"
+serde_repr = "^0.1"
 url = "^2.2"
 [dependencies.reqwest]
 version = "^0.11"
diff --git a/samples/client/petstore/rust/reqwest/petstore-async/src/lib.rs b/samples/client/petstore/rust/reqwest/petstore-async/src/lib.rs
index c1dd666f7957..53156b6a4211 100644
--- a/samples/client/petstore/rust/reqwest/petstore-async/src/lib.rs
+++ b/samples/client/petstore/rust/reqwest/petstore-async/src/lib.rs
@@ -1,5 +1,7 @@
 #[macro_use]
 extern crate serde_derive;
+#[macro_use]
+extern crate serde_repr;
 
 extern crate serde;
 extern crate serde_json;
diff --git a/samples/client/petstore/rust/reqwest/petstore/Cargo.toml b/samples/client/petstore/rust/reqwest/petstore/Cargo.toml
index 4e6f624c352b..fcf8d32959d5 100644
--- a/samples/client/petstore/rust/reqwest/petstore/Cargo.toml
+++ b/samples/client/petstore/rust/reqwest/petstore/Cargo.toml
@@ -8,6 +8,7 @@ edition = "2018"
 serde = "^1.0"
 serde_derive = "^1.0"
 serde_json = "^1.0"
+serde_repr = "^0.1"
 url = "^2.2"
 reqwest = "~0.9"
 
diff --git a/samples/client/petstore/rust/reqwest/petstore/src/lib.rs b/samples/client/petstore/rust/reqwest/petstore/src/lib.rs
index c1dd666f7957..53156b6a4211 100644
--- a/samples/client/petstore/rust/reqwest/petstore/src/lib.rs
+++ b/samples/client/petstore/rust/reqwest/petstore/src/lib.rs
@@ -1,5 +1,7 @@
 #[macro_use]
 extern crate serde_derive;
+#[macro_use]
+extern crate serde_repr;
 
 extern crate serde;
 extern crate serde_json;