diff --git a/src/Paket.Core/FindOutdated.fs b/src/Paket.Core/FindOutdated.fs
index 46d20e6252..8ad14091ce 100644
--- a/src/Paket.Core/FindOutdated.fs
+++ b/src/Paket.Core/FindOutdated.fs
@@ -25,7 +25,7 @@ let private adjustVersionRequirements strict includingPrereleases (dependenciesF
     DependenciesFile(dependenciesFile.FileName, groups, dependenciesFile.Lines)
 
 /// Finds all outdated packages.
-let FindOutdated strict includingPrereleases environment = trial {
+let FindOutdated strict includingPrereleases groupNameFilter environment = trial {
     let! lockFile = environment |> PaketEnv.ensureLockFileExists
     let force = true
 
@@ -45,11 +45,20 @@ let FindOutdated strict includingPrereleases environment = trial {
         |> List.toSeq
 
     let dependenciesFile = UpdateProcess.detectProjectFrameworksForDependenciesFile dependenciesFile
+    let checkedDepsGroups = 
+        match groupNameFilter with
+        | None -> dependenciesFile.Groups
+        | Some gname -> dependenciesFile.Groups |> Map.filter(fun k g -> k.ToString() = gname)
 
-    let newResolution = dependenciesFile.Resolve(force, getSha1, getVersionsF, NuGetV2.GetPackageDetails root true, dependenciesFile.Groups, PackageResolver.UpdateMode.UpdateAll)
+    let newResolution = dependenciesFile.Resolve(force, getSha1, getVersionsF, NuGetV2.GetPackageDetails root true, checkedDepsGroups, PackageResolver.UpdateMode.UpdateAll)
+
+    let checkedLockGroups = 
+        match groupNameFilter with
+        | None -> lockFile.Groups
+        | Some gname -> lockFile.Groups |> Map.filter(fun k g -> k.ToString() = gname)
 
     let changed = 
-        [for kv in lockFile.Groups do
+        [for kv in checkedLockGroups do
             match newResolution |> Map.tryFind kv.Key with
             | Some group ->
                 let newPackages = group.ResolvedPackages.GetModelOrFail()
@@ -77,7 +86,7 @@ let private printOutdated changed =
                 tracefn "    * %O %O -> %O" packageName oldVersion newVersion
 
 /// Prints all outdated packages.
-let ShowOutdated strict includingPrereleases environment = trial {
-    let! allOutdated = FindOutdated strict includingPrereleases environment
+let ShowOutdated strict includingPrereleases groupName environment = trial {
+    let! allOutdated = FindOutdated strict includingPrereleases groupName environment
     printOutdated allOutdated
 }
\ No newline at end of file
diff --git a/src/Paket.Core/PublicAPI.fs b/src/Paket.Core/PublicAPI.fs
index c1b4f68f4f..22c326184a 100644
--- a/src/Paket.Core/PublicAPI.fs
+++ b/src/Paket.Core/PublicAPI.fs
@@ -284,12 +284,12 @@ type Dependencies(dependenciesFileName: string) =
                 this.Restore(force, group, Array.toList referencesFiles, touchAffectedRefs, ignoreChecks)
 
     /// Lists outdated packages.
-    member this.ShowOutdated(strict: bool,includePrereleases: bool): unit =
-        FindOutdated.ShowOutdated strict includePrereleases |> this.Process
+    member this.ShowOutdated(strict: bool,includePrereleases: bool, groupName: string Option): unit =
+        FindOutdated.ShowOutdated strict includePrereleases groupName |> this.Process
 
     /// Finds all outdated packages.
-    member this.FindOutdated(strict: bool,includePrereleases: bool): (string * string * SemVerInfo) list =
-        FindOutdated.FindOutdated strict includePrereleases
+    member this.FindOutdated(strict: bool,includePrereleases: bool, groupName: string Option): (string * string * SemVerInfo) list =
+        FindOutdated.FindOutdated strict includePrereleases groupName
         |> this.Process
         |> List.map (fun (g, p,_,newVersion) -> g.ToString(),p.ToString(),newVersion)
 
diff --git a/src/Paket/Commands.fs b/src/Paket/Commands.fs
index e2632ec21a..0c327f39ad 100644
--- a/src/Paket/Commands.fs
+++ b/src/Paket/Commands.fs
@@ -118,12 +118,14 @@ with
 
 type OutdatedArgs =
     | Ignore_Constraints
+    | [<CustomCommandLine("group")>] Group of name:string
     | [<AltCommandLine("--pre")>] Include_Prereleases
 with
     interface IArgParserTemplate with
         member this.Usage =
             match this with
             | Ignore_Constraints -> "Ignores the version requirement as in the paket.dependencies file."
+            | Group(_) -> "Just check for one group."
             | Include_Prereleases -> "Includes prereleases."
 
 type RemoveArgs =
diff --git a/src/Paket/Program.fs b/src/Paket/Program.fs
index d6f8dca277..a177a74fe8 100644
--- a/src/Paket/Program.fs
+++ b/src/Paket/Program.fs
@@ -136,7 +136,8 @@ let install (results : ParseResults<_>) =
 let outdated (results : ParseResults<_>) =
     let strict = results.Contains <@ OutdatedArgs.Ignore_Constraints @> |> not
     let includePrereleases = results.Contains <@ OutdatedArgs.Include_Prereleases @>
-    Dependencies.Locate().ShowOutdated(strict, includePrereleases)
+    let group = results.TryGetResult <@ OutdatedArgs.Group @>
+    Dependencies.Locate().ShowOutdated(strict, includePrereleases, group)
 
 let remove (results : ParseResults<_>) =
     let packageName = results.GetResult <@ RemoveArgs.Nuget @>