diff --git a/GitPullRequest/GitPullRequest.csproj b/GitPullRequest/GitPullRequest.csproj
index 7c72576..e7e45f8 100644
--- a/GitPullRequest/GitPullRequest.csproj
+++ b/GitPullRequest/GitPullRequest.csproj
@@ -10,14 +10,14 @@
 
     <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
 
-    <Version>1.0.5</Version>
+    <Version>1.0.6</Version>
 
     <LangVersion>7.3</LangVersion>
 
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="LibGit2Sharp" Version="0.26.0-preview-0062" />
+    <PackageReference Include="LibGit2Sharp" Version="0.26.0-preview-0070" />
     <PackageReference Include="McMaster.Extensions.CommandLineUtils" Version="2.3.0-alpha" />
     <PackageReference Include="Microsoft.Alm.Authentication" Version="4.3.0" />
   </ItemGroup>
diff --git a/GitPullRequest/Program.cs b/GitPullRequest/Program.cs
index a7e999d..dc419e2 100644
--- a/GitPullRequest/Program.cs
+++ b/GitPullRequest/Program.cs
@@ -27,6 +27,9 @@ public static int Main(string[] args)
         [Option("--all", Description = "List all branches with associated pull requests")]
         public bool All { get; }
 
+        [Option("--prune", Description = "Remove pull requests with deleted remote branches")]
+        public bool Prune { get; }
+
         void OnExecute()
         {
             var repoPath = Repository.Discover(TargetDir);
@@ -39,6 +42,12 @@ void OnExecute()
             var service = new GitPullRequestService();
             using (var repo = new Repository(repoPath))
             {
+                if (Prune)
+                {
+                    PruneBranches(service, repo);
+                    return;
+                }
+
                 if (List || All)
                 {
                     ListBranches(service, repo);
@@ -122,6 +131,36 @@ void ListBranches(GitPullRequestService service, Repository repo)
             }
         }
 
+        void PruneBranches(GitPullRequestService service, Repository repo)
+        {
+            var gitHubRepositories = service.GetGitHubRepositories(repo);
+            var prs = repo.Branches
+                .Where(b => !b.IsRemote)
+                .SelectMany(b => service.FindPullRequests(gitHubRepositories, b), (b, p) => (Branch: b, PullRequest: p))
+                .Where(bp => bp.PullRequest.IsDeleted)
+                .Where(bp => PullRequestNumber == 0 || bp.PullRequest.Number == PullRequestNumber)
+                .ToList();
+
+            if (prs.Count == 0)
+            {
+                Console.WriteLine($"Couldn't find any pull requests with deleted remote branches to remove");
+                return;
+            }
+
+            foreach (var bp in prs)
+            {
+                if (bp.Branch.IsCurrentRepositoryHead)
+                {
+                    Console.WriteLine($"Can't remove current repository head #{bp.PullRequest.Number} {bp.Branch.FriendlyName}");
+                }
+                else
+                {
+                    Console.WriteLine($"Removing #{bp.PullRequest.Number} {bp.Branch.FriendlyName}");
+                    repo.Branches.Remove(bp.Branch);
+                }
+            }
+        }
+
         void Browse(string pullUrl)
         {
             Process.Start(new ProcessStartInfo