diff --git a/src/NSwag.Generation.AspNetCore.Tests.Web/Controllers/VersionedValuesController.cs b/src/NSwag.Generation.AspNetCore.Tests.Web/Controllers/VersionedValuesController.cs
index fceac1b361..8d7f1d53f1 100644
--- a/src/NSwag.Generation.AspNetCore.Tests.Web/Controllers/VersionedValuesController.cs
+++ b/src/NSwag.Generation.AspNetCore.Tests.Web/Controllers/VersionedValuesController.cs
@@ -5,7 +5,7 @@
 namespace NSwag.Generation.AspNetCore.Tests.Web.Controllers
 {
     [ApiVersion("1")]
-    [ApiVersion("2")]
+    [ApiVersion("2", Deprecated = true)]
     [Route("api/v{version:apiVersion}/[controller]")]
     [ApiController]
     [SwaggerTag("VersionedValues", Description = "Old operations")]
diff --git a/src/NSwag.Generation.AspNetCore.Tests/ApiVersionProcessorWithAspNetCoreTests.cs b/src/NSwag.Generation.AspNetCore.Tests/ApiVersionProcessorWithAspNetCoreTests.cs
index abc3b4f861..0d3cf93bac 100644
--- a/src/NSwag.Generation.AspNetCore.Tests/ApiVersionProcessorWithAspNetCoreTests.cs
+++ b/src/NSwag.Generation.AspNetCore.Tests/ApiVersionProcessorWithAspNetCoreTests.cs
@@ -1,7 +1,6 @@
 using System.Linq;
 using System.Threading.Tasks;
 using NSwag.Generation.AspNetCore.Tests.Web.Controllers;
-using NSwag.Generation.Processors;
 using Xunit;
 
 namespace NSwag.Generation.AspNetCore.Tests
@@ -60,6 +59,7 @@ public async Task When_generating_v2_then_only_v2_operations_are_included()
 
             Assert.Equal(2, operations.Count());
             Assert.True(operations.All(o => o.Path.Contains("/v2/")));
+            Assert.True(operations.All(o => o.Operation.IsDeprecated));
 
             // VersionedIgnoredValues tag should not be in json document
             Assert.Equal(1, document.Tags.Count);
diff --git a/src/NSwag.Generation.AspNetCore/AspNetCoreOpenApiDocumentGenerator.cs b/src/NSwag.Generation.AspNetCore/AspNetCoreOpenApiDocumentGenerator.cs
index 82fa6f5f41..230394d20c 100644
--- a/src/NSwag.Generation.AspNetCore/AspNetCoreOpenApiDocumentGenerator.cs
+++ b/src/NSwag.Generation.AspNetCore/AspNetCoreOpenApiDocumentGenerator.cs
@@ -7,6 +7,7 @@
 //-----------------------------------------------------------------------
 
 using System;
+using System.Collections;
 using System.Collections.Generic;
 using System.Linq;
 using System.Reflection;
@@ -159,7 +160,7 @@ private List<Type> GenerateForControllers(
                             Method = httpMethod,
                             Operation = new OpenApiOperation
                             {
-                                IsDeprecated = method.GetCustomAttribute<ObsoleteAttribute>() != null,
+                                IsDeprecated = IsOperationDeprecated(item.Item1, controllerActionDescriptor, method),
                                 OperationId = GetOperationId(document, controllerActionDescriptor, method),
                                 Consumes = apiDescription.SupportedRequestFormats
                                    .Select(f => f.MediaType)
@@ -189,6 +190,25 @@ private List<Type> GenerateForControllers(
             return usedControllerTypes;
         }
 
+        private bool IsOperationDeprecated(ApiDescription apiDescription, ControllerActionDescriptor controllerActionDescriptor, MethodInfo methodInfo)
+        {
+            if (methodInfo.GetCustomAttribute<ObsoleteAttribute>() != null)
+            {
+                return true;
+            }
+
+            dynamic apiVersionModel = controllerActionDescriptor?
+                .Properties
+                .FirstOrDefault(p => p.Key is Type type && type.Name == "ApiVersionModel")
+                .Value;
+
+            var isDeprecated = (bool)(apiVersionModel != null) &&
+                ((IEnumerable)apiVersionModel.DeprecatedApiVersions).OfType<object>()
+                .Any(v => v.ToString() == apiDescription.GroupName);
+
+            return isDeprecated;
+        }
+
         private List<Tuple<OpenApiOperationDescription, ApiDescription, MethodInfo>> AddOperationDescriptionsToDocument(
             OpenApiDocument document, Type controllerType,
             List<Tuple<OpenApiOperationDescription, ApiDescription, MethodInfo>> operations,