diff --git a/Swashbuckle.OData.Nuget/Swashbuckle.OData.NuGet.nuproj b/Swashbuckle.OData.Nuget/Swashbuckle.OData.NuGet.nuproj
index dbc4cff..d0d22a6 100644
--- a/Swashbuckle.OData.Nuget/Swashbuckle.OData.NuGet.nuproj
+++ b/Swashbuckle.OData.Nuget/Swashbuckle.OData.NuGet.nuproj
@@ -25,12 +25,12 @@
     <Owners>Richard Beauchamp</Owners>
     <Summary>Extends Swashbuckle with OData v4 support!</Summary>
     <Description>Extends Swashbuckle with OData v4 support!</Description>
-    <ReleaseNotes>Supports OData actions that accept an array of Entities or Complex Types. Fixes #59, #60, #62.</ReleaseNotes>
+    <ReleaseNotes>Supports decimal parameters, keys and return types.</ReleaseNotes>
     <ProjectUrl>https://github.com/rbeauchamp/Swashbuckle.OData</ProjectUrl>
     <LicenseUrl>https://github.com/rbeauchamp/Swashbuckle.OData/blob/master/License.txt</LicenseUrl>
     <Copyright>Copyright 2015</Copyright>
     <Tags>Swashbuckle Swagger SwaggerUi OData Documentation Discovery Help WebApi AspNet AspNetWebApi Docs WebHost IIS</Tags>
-    <Version>2.12.5</Version>
+    <Version>2.13.0</Version>
   </PropertyGroup>
   <ItemGroup>
     <ProjectReference Include="..\Swashbuckle.OData\Swashbuckle.OData.csproj" />
diff --git a/Swashbuckle.OData.Tests/Fixtures/ParameterTests/DecimalParameterAndResponseTests.cs b/Swashbuckle.OData.Tests/Fixtures/ParameterTests/DecimalParameterAndResponseTests.cs
index c3a4fdc..470f2b2 100644
--- a/Swashbuckle.OData.Tests/Fixtures/ParameterTests/DecimalParameterAndResponseTests.cs
+++ b/Swashbuckle.OData.Tests/Fixtures/ParameterTests/DecimalParameterAndResponseTests.cs
@@ -21,7 +21,7 @@ namespace Swashbuckle.OData.Tests
     public class DecimalParameterAndResponseTests
     {
         [Test]
-        public async Task It_supports_a_decimal_key()
+        public async Task It_supports_entity_with_a_decimal_key()
         {
             using (WebApp.Start(HttpClientUtils.BaseAddress, appBuilder => Configuration(appBuilder, typeof(DecimalParametersController))))
             {
@@ -44,6 +44,42 @@ public async Task It_supports_a_decimal_key()
             }
         }
 
+        [Test]
+        public async Task It_supports_functions_with_a_decimal_parameter()
+        {
+            using (WebApp.Start(HttpClientUtils.BaseAddress, appBuilder => Configuration(appBuilder, typeof(DecimalParametersController))))
+            {
+                // Arrange
+                var httpClient = HttpClientUtils.GetHttpClient(HttpClientUtils.BaseAddress);
+                // Verify that the OData route in the test controller is valid
+                var result = await httpClient.GetJsonAsync<ODataResponse<decimal>>("/odata/DecimalParameters/Default.ResponseTest(param=2.5m)");
+                result.Value.Should().Be(2.5m);
+
+                // Act
+                var swaggerDocument = await httpClient.GetJsonAsync<SwaggerDocument>("swagger/docs/v1");
+
+                // Assert
+                PathItem pathItem;
+                swaggerDocument.paths.TryGetValue("/odata/DecimalParameters/Default.ResponseTest(param={param})", out pathItem);
+                pathItem.Should().NotBeNull();
+                pathItem.get.Should().NotBeNull();
+                var getResponse = pathItem.get.responses.SingleOrDefault(response => response.Key == "200");
+                getResponse.Should().NotBeNull();
+                getResponse.Value.schema.@ref.Should().Be("#/definitions/ODataResponse[Decimal]");
+                swaggerDocument.definitions.Should().ContainKey("ODataResponse[Decimal]");
+                var responseSchema = swaggerDocument.definitions["ODataResponse[Decimal]"];
+                responseSchema.Should().NotBeNull();
+                responseSchema.properties.Should().NotBeNull();
+                responseSchema.properties.Should().ContainKey("@odata.context");
+                responseSchema.properties["@odata.context"].type.Should().Be("string");
+                responseSchema.properties["value"].type.Should().Be("number");
+                responseSchema.properties["value"].format.Should().Be("decimal");
+                responseSchema.properties["value"].items.Should().BeNull();
+
+                await ValidationUtils.ValidateSwaggerJson();
+            }
+        }
+
         private static void Configuration(IAppBuilder appBuilder, Type targetController)
         {
             var config = appBuilder.GetStandardHttpConfig(targetController);
diff --git a/Swashbuckle.OData/DefaultCompositionRoot.cs b/Swashbuckle.OData/DefaultCompositionRoot.cs
index a25f12f..65c8fce 100644
--- a/Swashbuckle.OData/DefaultCompositionRoot.cs
+++ b/Swashbuckle.OData/DefaultCompositionRoot.cs
@@ -73,7 +73,7 @@ public static SwaggerProviderOptions GetSwaggerProviderOptions(SwaggerDocsConfig
                 swaggerDocsConfig.GetFieldValue<bool>("_ignoreObsoleteActions"),
                 swaggerDocsConfig.GetFieldValue<Func<ApiDescription, string>>("_groupingKeySelector"),
                 swaggerDocsConfig.GetFieldValue<IComparer<string>>("_groupingKeyComparer"),
-                swaggerDocsConfig.GetFieldValue<IDictionary<Type, Func<Schema>>>("_customSchemaMappings"),
+                GetODataCustomSchemaMappings(swaggerDocsConfig),
                 swaggerDocsConfig.GetFieldValue<IList<Func<ISchemaFilter>>>("_schemaFilters", true).Select(factory => factory()),
                 swaggerDocsConfig.GetFieldValue<IList<Func<IModelFilter>>>("_modelFilters", true).Select(factory => factory()),
                 swaggerDocsConfig.GetFieldValue<bool>("_ignoreObsoleteProperties"),
@@ -86,6 +86,18 @@ public static SwaggerProviderOptions GetSwaggerProviderOptions(SwaggerDocsConfig
             );
         }
 
+        /// <summary>
+        /// Gets custom schema mappings that will only be applied to OData operations.
+        /// </summary>
+        /// <param name="swaggerDocsConfig">The swagger docs configuration.</param>
+        /// <returns></returns>
+        private static IDictionary<Type, Func<Schema>> GetODataCustomSchemaMappings(SwaggerDocsConfig swaggerDocsConfig)
+        {
+            var customSchemaMappings = swaggerDocsConfig.GetFieldValue<IDictionary<Type, Func<Schema>>>("_customSchemaMappings", true);
+            customSchemaMappings[typeof(decimal)] = () => new Schema { type = "number", format = "decimal" };
+            return customSchemaMappings;
+        }
+
         /// <summary>
         /// Gets operation filters that will only be applied to OData operations.
         /// </summary>
diff --git a/Swashbuckle.OData/Properties/AssemblyInfo.cs b/Swashbuckle.OData/Properties/AssemblyInfo.cs
index ebfa4c3..6f0aada 100644
--- a/Swashbuckle.OData/Properties/AssemblyInfo.cs
+++ b/Swashbuckle.OData/Properties/AssemblyInfo.cs
@@ -37,4 +37,4 @@
 
 [assembly: AssemblyVersion("1.0.0.0")]
 [assembly: AssemblyFileVersion("1.0.0.0")]
-[assembly: AssemblyInformationalVersion("2.12.5")]
\ No newline at end of file
+[assembly: AssemblyInformationalVersion("2.13.0")]
\ No newline at end of file
diff --git a/Swashbuckle.OData/SchemaRegistryExtensions.cs b/Swashbuckle.OData/SchemaRegistryExtensions.cs
index 7c129aa..d786598 100644
--- a/Swashbuckle.OData/SchemaRegistryExtensions.cs
+++ b/Swashbuckle.OData/SchemaRegistryExtensions.cs
@@ -179,6 +179,10 @@ private static bool IsResponseWithPrimiveTypeNotSupportedByJson(Type type, Messa
                 {
                     return true;
                 }
+                if (type == typeof(decimal))
+                {
+                    return true;
+                }
             }
             return false;
         }
diff --git a/appveyor.yml b/appveyor.yml
index a532fd2..61a705d 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,4 +1,4 @@
-version: 2.12.5.{build}
+version: 2.13.0.{build}
 
 before_build:
 - cmd: nuget restore