diff --git a/Octokit.Tests.Integration/Clients/ProjectCardsClientTests.cs b/Octokit.Tests.Integration/Clients/ProjectCardsClientTests.cs
index 3c127e0b..c48cf675 100644
--- a/Octokit.Tests.Integration/Clients/ProjectCardsClientTests.cs
+++ b/Octokit.Tests.Integration/Clients/ProjectCardsClientTests.cs
@@ -202,9 +202,8 @@ public class ProjectCardsClientTests
         public TheCreateMethod()
         {
             _github = Helper.GetAuthenticatedClient();
-            var repoName = Helper.MakeNameWithTimestamp("public-repo");
 
-            _context = _github.CreateRepositoryContext(new NewRepository(repoName)).Result;
+            _context = _github.CreateRepositoryContext("public-repo").Result;
         }
 
         [IntegrationTest]
@@ -228,6 +227,22 @@ public class ProjectCardsClientTests
             Assert.NotNull(card);
         }
 
+        [IntegrationTest]
+        public async Task CreatesPullRequestCard()
+        {
+            await _github.CreateTheWorld(_context.Repository);
+
+            var project = await CreateRepositoryProjectHelper(_github, _context.RepositoryId);
+
+            var pullRequest = await _github.CreatePullRequest(_context.Repository);
+
+            var column = await CreateColumnHelper(_github, project.Id);
+
+            var card = await CreatePullRequestCardHelper(_github, pullRequest.Id, column.Id);
+
+            Assert.NotNull(card);
+        }
+
         public void Dispose()
         {
             if (_context != null)
@@ -445,5 +460,13 @@ public class ProjectCardsClientTests
 
         return result;
     }
+
+    private static async Task<ProjectCard> CreatePullRequestCardHelper(IGitHubClient githubClient, long pullRequestId, int columnId)
+    {
+        var newCard = new NewProjectCard(pullRequestId, ProjectCardContentType.PullRequest);
+        var result = await githubClient.Repository.Project.Card.Create(columnId, newCard);
+
+        return result;
+    }
 }
 
diff --git a/Octokit/Models/Request/NewProjectCard.cs b/Octokit/Models/Request/NewProjectCard.cs
index 35c8cb28..84578381 100644
--- a/Octokit/Models/Request/NewProjectCard.cs
+++ b/Octokit/Models/Request/NewProjectCard.cs
@@ -12,7 +12,7 @@ namespace Octokit
             Note = note;
         }
 
-        public NewProjectCard(int contentId, ProjectCardContentType contentType)
+        public NewProjectCard(long contentId, ProjectCardContentType contentType)
         {
             ContentId = contentId;
             ContentType = contentType;
@@ -27,7 +27,7 @@ namespace Octokit
         /// The id of the Issue or Pull Request to associate with this card.
         /// </summary>
         [Parameter(Key = "content_id")]
-        public int? ContentId { get; protected set; }
+        public long? ContentId { get; protected set; }
 
         /// <summary>
         /// The type of content to associate with this card.
@@ -46,7 +46,9 @@ namespace Octokit
 
     public enum ProjectCardContentType
     {
-        [Parameter(Value = "Issue")]
-        Issue
+        [Parameter(Value = nameof(Issue))]
+        Issue,
+        [Parameter(Value = nameof(PullRequest))]
+        PullRequest
     }
 }