diff --git a/build/BasicTasks.fs b/build/BasicTasks.fs
index 449e4f9f..67c42bf5 100644
--- a/build/BasicTasks.fs
+++ b/build/BasicTasks.fs
@@ -4,6 +4,7 @@ open BlackFox.Fake
 open Fake.IO
 open Fake.DotNet
 open Fake.IO.Globbing.Operators
+open Helpers
 
 open ProjectInfo
 
@@ -134,11 +135,15 @@ module Helper =
         |> Proc.Parallel.run
         |> ignore
 
+
+
 let setPrereleaseTag = BuildTask.create "SetPrereleaseTag" [] {
-    printfn "Please enter pre-release package suffix"
-    let suffix = System.Console.ReadLine()
-    prereleaseSuffix <- suffix
-    prereleaseTag <- (sprintf "%i.%i.%i-%s" release.SemVer.Major release.SemVer.Minor release.SemVer.Patch suffix)
+    printfn "Please enter pre-release package suffix option: (a/b/rc)"
+    let suffixTag = System.Console.ReadLine() |> PreReleaseFlag.fromInput
+    printfn "Plrease enter pre-release package version number"
+    let suffixNumber = System.Console.ReadLine() |> int
+    prereleaseSuffix <- suffixTag
+    prereleaseSuffixNumber <- suffixNumber
     isPrerelease <- true
 }
 
diff --git a/build/Helpers.fs b/build/Helpers.fs
index 5dd1ed80..cb00dddb 100644
--- a/build/Helpers.fs
+++ b/build/Helpers.fs
@@ -25,4 +25,37 @@ let runOrDefault defaultTarget args =
         0
     with e ->
         printfn "%A" e
-        1
\ No newline at end of file
+        1
+
+type PreReleaseFlag = 
+    | Alpha
+    | Beta
+    | ReleaseCandidate
+
+    static member fromInput (input: string) =
+        match input with
+        | "a" -> Alpha
+        | "b" -> Beta
+        | "rc" -> ReleaseCandidate
+        | _ -> failwith "Invalid input"
+
+    static member toNugetTag (semVer : SemVerInfo) (flag: PreReleaseFlag) (number : int) =
+        let suffix = 
+            match flag with
+            | Alpha -> $"alpha.{number}"
+            | Beta -> $"beta.{number}"
+            | ReleaseCandidate -> $"rc.{number}"
+        sprintf "%i.%i.%i-%s" semVer.Major semVer.Minor semVer.Patch suffix
+
+
+    static member toNPMTag (semVer : SemVerInfo) (flag: PreReleaseFlag) (number : int) =
+        PreReleaseFlag.toNugetTag semVer flag number
+
+    static member toPyPITag (semVer : SemVerInfo) (tag: PreReleaseFlag) (number : int) =
+        let suffix = 
+            match tag with
+            | Alpha -> $"a{number}"
+            | Beta -> $"b{number}"
+            | ReleaseCandidate -> $"rc{number}"
+        sprintf "%i.%i.%i%s" semVer.Major semVer.Minor semVer.Patch suffix
+
diff --git a/build/PackageTasks.fs b/build/PackageTasks.fs
index 6d073b24..42f6debd 100644
--- a/build/PackageTasks.fs
+++ b/build/PackageTasks.fs
@@ -3,6 +3,8 @@
 open MessagePrompts
 open BasicTasks
 open TestTasks
+open ProjectInfo
+open Helpers
 
 open BlackFox.Fake
 open Fake.Core
@@ -41,7 +43,8 @@ let packDotNet = BuildTask.create "PackDotNet" [clean; build; runTests] {
 }
 
 let packDotNetPrerelease = BuildTask.create "PackDotNetPrerelease" [setPrereleaseTag; clean; build; runTests] {
-    BundleDotNet.bundle ProjectInfo.prereleaseTag (Some ProjectInfo.prereleaseTag)
+    let prereleaseTag = PreReleaseFlag.toNugetTag release.SemVer prereleaseSuffix prereleaseSuffixNumber
+    BundleDotNet.bundle prereleaseTag (Some prereleaseTag)
 }
 
 module BundleJs =
@@ -69,7 +72,8 @@ let packJS = BuildTask.create "PackJS" [clean; build; runTests] {
 }
 
 let packJSPrerelease = BuildTask.create "PackJSPrerelease" [setPrereleaseTag; clean; build; runTests] {
-    BundleJs.bundle ProjectInfo.prereleaseTag
+    let prereleaseTag = PreReleaseFlag.toNPMTag release.SemVer prereleaseSuffix prereleaseSuffixNumber
+    BundleJs.bundle prereleaseTag
 }
 
 module BundlePy =
@@ -98,13 +102,12 @@ let packPy = BuildTask.create "PackPy" [clean; build; runTests] {
 
 }
 
-//let packPyPrerelease = BuildTask.create "PackJSPrerelease" [setPrereleaseTag; clean; build; runTests] {
-//    if promptYesNo (sprintf "[NPM] package tag will be %s OK?" ProjectInfo.prereleaseTag ) then
-//        BundleJs.bundle ProjectInfo.prereleaseTag
-//    else failwith "aborted"
-//    }
+let packPyPrerelease = BuildTask.create "PackPyPrerelease" [setPrereleaseTag; clean; build; runTests] {
+    let prereleaseTag = PreReleaseFlag.toPyPITag release.SemVer prereleaseSuffix prereleaseSuffixNumber
+    BundlePy.bundle prereleaseTag
+    }
 
 
 let pack = BuildTask.createEmpty "Pack" [packDotNet; packJS; packPy]
 
-let packPrerelease = BuildTask.createEmpty "PackPrerelease" [packDotNetPrerelease;packJSPrerelease]
\ No newline at end of file
+let packPrerelease = BuildTask.createEmpty "PackPrerelease" [packDotNetPrerelease;packJSPrerelease;packPyPrerelease]
\ No newline at end of file
diff --git a/build/ProjectInfo.fs b/build/ProjectInfo.fs
index f8f79b97..128cf543 100644
--- a/build/ProjectInfo.fs
+++ b/build/ProjectInfo.fs
@@ -1,6 +1,7 @@
 module ProjectInfo
 
 open Fake.Core
+open Helpers
 
 let project = "ARCtrl"
 
@@ -50,8 +51,8 @@ let stableVersion = SemVer.parse release.NugetVersion
 
 let stableVersionTag = (sprintf "%i.%i.%i" stableVersion.Major stableVersion.Minor stableVersion.Patch )
 
-let mutable prereleaseSuffix = ""
+let mutable prereleaseSuffix = PreReleaseFlag.Alpha
 
-let mutable prereleaseTag = ""
+let mutable prereleaseSuffixNumber = 0
 
 let mutable isPrerelease = false
\ No newline at end of file
diff --git a/build/ReleaseTasks.fs b/build/ReleaseTasks.fs
index 9086d5cd..7be87479 100644
--- a/build/ReleaseTasks.fs
+++ b/build/ReleaseTasks.fs
@@ -5,6 +5,7 @@ open ProjectInfo
 open BasicTasks
 open TestTasks
 open PackageTasks
+open Helpers 
 
 open BlackFox.Fake
 open Fake.Core
@@ -23,6 +24,8 @@ let createTag = BuildTask.create "CreateTag" [clean; build; runTests; packDotNet
 }
 
 let createPrereleaseTag = BuildTask.create "CreatePrereleaseTag" [setPrereleaseTag; clean; build; runTests; packDotNetPrerelease] {
+    let prereleaseTag = PreReleaseFlag.toNugetTag release.SemVer prereleaseSuffix prereleaseSuffixNumber
+
     if promptYesNo (sprintf "tagging branch with %s OK?" prereleaseTag ) then 
         Git.Branches.tag "" prereleaseTag
         Git.Branches.pushTag "" projectRepo prereleaseTag
@@ -46,6 +49,7 @@ let publishNuget = BuildTask.create "PublishNuget" [clean; build; runTests; pack
 let publishNugetPrerelease = BuildTask.create "PublishNugetPrerelease" [clean; build; runTests; packDotNetPrerelease] {
     let targets = (!! (sprintf "%s/*.*pkg" netPkgDir ))
     for target in targets do printfn "%A" target
+    let prereleaseTag = PreReleaseFlag.toNugetTag release.SemVer prereleaseSuffix prereleaseSuffixNumber
     let msg = sprintf "[NUGET] release package with version %s?" prereleaseTag 
     if promptYesNo msg then
         let source = "https://api.nuget.org/v3/index.json"
@@ -77,6 +81,7 @@ let publishNPMPrerelease = BuildTask.create "PublishNPMPrerelease" [clean; build
         (!! (sprintf "%s/*.tgz" npmPkgDir ))
         |> Seq.head
     printfn "%A" target
+    let prereleaseTag = PreReleaseFlag.toNPMTag release.SemVer prereleaseSuffix prereleaseSuffixNumber
     let msg = sprintf "[NPM] release package with version %s?" prereleaseTag 
     if promptYesNo msg then
         let apikey =  Environment.environVarOrNone "NPM_KEY"    
@@ -88,7 +93,7 @@ let publishNPMPrerelease = BuildTask.create "PublishNPMPrerelease" [clean; build
     else failwith "aborted"
 }
 
-let publishPyPi = BuildTask.create "PublishPyPi" [packPy] {
+let publishPyPi = BuildTask.create "PublishPyPi" [clean; build; runTests; packPy] {
     let msg = sprintf "[PyPi] release package with version %s?" stableVersionTag
     if promptYesNo msg then
         let apikey = Environment.environVarOrNone "PYPI_KEY"
@@ -98,4 +103,17 @@ let publishPyPi = BuildTask.create "PublishPyPi" [packPy] {
         | None -> ()
         run python "-m poetry publish" ProjectInfo.pyPkgDir
     else failwith "aborted"
+}
+
+let publishPyPiPrerelease = BuildTask.create "PublishPyPiPrerelease" [clean; build; runTests; packPyPrerelease] {
+    let prereleaseTag = PreReleaseFlag.toPyPITag release.SemVer prereleaseSuffix prereleaseSuffixNumber
+    let msg = sprintf "[PyPi] release package with version %s?" prereleaseTag
+    if promptYesNo msg then
+        let apikey = Environment.environVarOrNone "PYPI_KEY"
+        match apikey with
+        | Some key -> 
+            run python $"-m poetry config pypi-token.pypi {key}" ProjectInfo.pyPkgDir
+        | None -> ()
+        run python "-m poetry publish --build" ProjectInfo.pyPkgDir
+    else failwith "aborted"
 }
\ No newline at end of file
diff --git a/src/Core/ARCtrl.Core.fsproj b/src/Core/ARCtrl.Core.fsproj
index 8e0f6836..d94424ca 100644
--- a/src/Core/ARCtrl.Core.fsproj
+++ b/src/Core/ARCtrl.Core.fsproj
@@ -56,8 +56,11 @@
     <ProjectReference Include="..\CWL\ARCtrl.CWL.fsproj" />
     <ProjectReference Include="..\FileSystem\ARCtrl.FileSystem.fsproj" />
   </ItemGroup>
+  <ItemGroup>
+    <None Include="../../build/logo.png" Pack="true" PackagePath="\" />
+  </ItemGroup>
   <PropertyGroup>
-    <Authors>nfdi4plants, Lukas Weil, Kevin Frey, Kevin Schneider, Oliver Muas</Authors>
+    <Authors>nfdi4plants, Lukas Weil, Kevin Frey, Kevin Schneider, Oliver Maus</Authors>
     <Description>ARC and ISA compliant experimental metadata toolkit in F#. This project is meant as an easy means to open, manipulate and save ISA (Investigation,Study,Assay) metadata files in the dotnet environment.</Description>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
     <PackageIcon>logo.png</PackageIcon>
diff --git a/src/Json/ARCtrl.Json.fsproj b/src/Json/ARCtrl.Json.fsproj
index 50497f3d..66883016 100644
--- a/src/Json/ARCtrl.Json.fsproj
+++ b/src/Json/ARCtrl.Json.fsproj
@@ -83,6 +83,9 @@
   <ItemGroup>
     <ProjectReference Include="..\Core\ARCtrl.Core.fsproj" />
   </ItemGroup>
+  <ItemGroup>
+    <None Include="../../build/logo.png" Pack="true" PackagePath="\" />
+  </ItemGroup>
   <PropertyGroup>
     <Authors>nfdi4plants, Lukas Weil, Florian Wetzels, Kevin Frey</Authors>
     <Description>ARC and ISA json compliant parser for experimental metadata toolkit in F#. This project is meant as an easy means to open, manipulate and save ISA (Investigation,Study,Assay) metadata files in isa-json format.</Description>
diff --git a/src/Spreadsheet/ARCtrl.Spreadsheet.fsproj b/src/Spreadsheet/ARCtrl.Spreadsheet.fsproj
index d5a6f817..1df8bcca 100644
--- a/src/Spreadsheet/ARCtrl.Spreadsheet.fsproj
+++ b/src/Spreadsheet/ARCtrl.Spreadsheet.fsproj
@@ -31,6 +31,9 @@
   <ItemGroup>
     <PackageReference Include="FsSpreadsheet" Version="5.1.3" />
   </ItemGroup>
+  <ItemGroup>
+    <None Include="../../build/logo.png" Pack="true" PackagePath="\" />
+  </ItemGroup>
   <ItemGroup>
   	<Content Include="*.fsproj; **\*.fs; **\*.fsi" PackagePath="fable\" />
   </ItemGroup>