diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7696f08fa..dba4a37d6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,9 +14,9 @@ The `Unreleased` section name is replaced by the expected version of next releas
 
 ### Changed
 
-
 - Update to `3.1.101` SDK
-- Retarget `netcoreapp2.1` apps to `netcoreapp3.1` (not least to make tool traverse proxies on Windows)
+- Retarget `netcoreapp2.1` apps to `netcoreapp3.1`
+- Target `FSharp.Control.AsyncSeq` v `2.0.23`
 
 ### Removed
 ### Fixed
diff --git a/build.proj b/build.proj
index d822cc84b..99309aa4b 100644
--- a/build.proj
+++ b/build.proj
@@ -24,7 +24,6 @@
     <Exec Command="dotnet pack src/Equinox.SqlStreamStore.MySql $(Cfg) $(PackOptions)" />
     <Exec Command="dotnet pack src/Equinox.SqlStreamStore.Postgres $(Cfg) $(PackOptions)" />
     <Exec Command="dotnet pack tools/Equinox.Tools.TestHarness $(Cfg) $(PackOptions)" />
-    <Exec Command='dotnet publish tools/Equinox.Tool $(Cfg) -f net461 -o "$(ThisDirAbsolute)/bin/equinox-tool/net461" ' />
     <Exec Command="dotnet pack tools/Equinox.Tool $(Cfg) $(PackOptions) /p:PackAsTool=true" />
   </Target>
 
diff --git a/samples/Infrastructure/Infrastructure.fsproj b/samples/Infrastructure/Infrastructure.fsproj
index ec7bf948d..e27d6a039 100644
--- a/samples/Infrastructure/Infrastructure.fsproj
+++ b/samples/Infrastructure/Infrastructure.fsproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net461</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1</TargetFrameworks>
     <WarningLevel>5</WarningLevel>
     <IsTestProject>false</IsTestProject>
     <DisableImplicitFSharpCoreReference>true</DisableImplicitFSharpCoreReference>
@@ -31,14 +31,11 @@
     <PackageReference Include="Argu" Version="6.0.0" />
     <!--Note .NetCore sufficed package is not an officially suported package and is not longer needed-->
     <PackageReference Include="Destructurama.FSharp" Version="1.1.1-dev-00033" />
-    <!--Handle TypeShape-restriction; would otherwise use 3.1.2.5 for net461 -->
-    <!--Handle Destructurama.FSharp-restriction; would otherwise use 4.0.0.1 for net461 -->
     <PackageReference Include="FSharp.Core" Version="4.3.4" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="2.1.1" />
     <PackageReference Include="Serilog.Sinks.Console" Version="3.1.1" />
     <PackageReference Include="Serilog.Sinks.Seq" Version="4.0.0" />
     <PackageReference Include="Microsoft.Azure.Cosmos.Direct" Version="3.1.4" />
-    <Reference Include="System.Runtime.Caching" Condition=" '$(TargetFramework)' != 'netstandard2.0' " />
   </ItemGroup>
 
 </Project>
\ No newline at end of file
diff --git a/samples/Store/Integration/Integration.fsproj b/samples/Store/Integration/Integration.fsproj
index 906d1d38e..d39726d1f 100644
--- a/samples/Store/Integration/Integration.fsproj
+++ b/samples/Store/Integration/Integration.fsproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>$(TestTargetFrameworks)</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <WarningLevel>5</WarningLevel>
     <DisableImplicitSystemValueTupleReference>true</DisableImplicitSystemValueTupleReference>
diff --git a/samples/Tutorial/Tutorial.fsproj b/samples/Tutorial/Tutorial.fsproj
index f94548ffd..250f0f066 100644
--- a/samples/Tutorial/Tutorial.fsproj
+++ b/samples/Tutorial/Tutorial.fsproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net461</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1</TargetFrameworks>
     <WarningLevel>5</WarningLevel>
     <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
     <DisableImplicitFSharpCoreReference>true</DisableImplicitFSharpCoreReference>
@@ -31,8 +31,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="FSharp.Core" Version="3.1.2.5" Condition=" '$(TargetFramework)' == 'net461' " />
-    <PackageReference Include="FSharp.Core" Version="4.3.4" Condition=" '$(TargetFramework)' == 'netstandard2.0' " />
+    <PackageReference Include="FSharp.Core" Version="4.3.4" />
 
     <PackageReference Include="Serilog.Sinks.Console" Version="3.1.1" />
     <PackageReference Include="Serilog.Sinks.Seq" Version="4.0.0" />
diff --git a/src/Equinox.Core/Infrastructure.fs b/src/Equinox.Core/Infrastructure.fs
index b8003e109..d73177d6f 100755
--- a/src/Equinox.Core/Infrastructure.fs
+++ b/src/Equinox.Core/Infrastructure.fs
@@ -9,7 +9,7 @@ open System.Threading.Tasks
 
 type OAttribute = System.Runtime.InteropServices.OptionalAttribute
 type DAttribute = System.Runtime.InteropServices.DefaultParameterValueAttribute
-    
+
 #if NET461
 module Array =
     let tryHead (array : 'T[]) =
@@ -68,28 +68,6 @@ type Async with
                     sc ())
             |> ignore)
 
-#if !NO_ASYNCSEQ
-module AsyncSeq =
-    /// Same as takeWhileAsync, but returns the final element too
-    let takeWhileInclusiveAsync p (source : AsyncSeq<'T>) : AsyncSeq<_> = asyncSeq {
-        use ie = source.GetEnumerator()
-        let! move = ie.MoveNext()
-        let b = ref move
-        while b.Value.IsSome do
-            let v = b.Value.Value
-            yield v
-            let! res = p v
-            if res then
-                let! moven = ie.MoveNext()
-                b := moven
-            else
-                b := None }
-
-    /// Same as takeWhile, but returns the final element too
-    let takeWhileInclusive p (source : AsyncSeq<'T>) =
-        takeWhileInclusiveAsync (p >> async.Return) source
-#endif
-
 [<RequireQualifiedAccess>]
 module Regex =
     open System.Text.RegularExpressions
diff --git a/src/Equinox.Cosmos/Equinox.Cosmos.fsproj b/src/Equinox.Cosmos/Equinox.Cosmos.fsproj
index 8c937ebd4..c68577ae8 100644
--- a/src/Equinox.Cosmos/Equinox.Cosmos.fsproj
+++ b/src/Equinox.Cosmos/Equinox.Cosmos.fsproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net461</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1</TargetFrameworks>
     <WarningLevel>5</WarningLevel>
     <IsTestProject>false</IsTestProject>
     <DisableImplicitFSharpCoreReference>true</DisableImplicitFSharpCoreReference>
@@ -19,17 +19,16 @@
   </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Include="Microsoft.Bcl.AsyncInterfaces" Version="1.1.0" />
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All" />
     <PackageReference Include="MinVer" Version="2.0.0" PrivateAssets="All" />
 
-    <PackageReference Include="FSharp.Core" Version="3.1.2.5" Condition=" '$(TargetFramework)' != 'netstandard2.0' " />
     <PackageReference Include="FSharp.Core" Version="4.3.4" Condition=" '$(TargetFramework)' == 'netstandard2.0' " />
 
     <PackageReference Include="FsCodec.NewtonsoftJson" Version="2.0.0" />
-    <PackageReference Include="FSharp.Control.AsyncSeq" Version="2.0.21" />
+    <PackageReference Include="FSharp.Control.AsyncSeq" Version="2.0.23" />
     <PackageReference Include="Microsoft.Azure.Cosmos" Version="3.1.1" />
-    <PackageReference Include="System.Runtime.Caching" Version="4.5.0" Condition=" '$(TargetFramework)' == 'netstandard2.0' " />
-    <Reference Include="System.Runtime.Caching" Condition=" '$(TargetFramework)' != 'netstandard2.0' " />
+    <PackageReference Include="System.Runtime.Caching" Version="4.5.0" />
   </ItemGroup>
 
 </Project>
\ No newline at end of file
diff --git a/src/Equinox.EventStore/Equinox.EventStore.fsproj b/src/Equinox.EventStore/Equinox.EventStore.fsproj
index b7c6b71d3..9394721b3 100644
--- a/src/Equinox.EventStore/Equinox.EventStore.fsproj
+++ b/src/Equinox.EventStore/Equinox.EventStore.fsproj
@@ -27,7 +27,7 @@
 
     <PackageReference Include="EventStore.Client" Version="5.0.1" />
     <PackageReference Include="FsCodec" Version="2.0.0" />
-    <PackageReference Include="FSharp.Control.AsyncSeq" Version="2.0.21" />
+    <PackageReference Include="FSharp.Control.AsyncSeq" Version="2.0.23" />
   </ItemGroup>
 
 </Project>
\ No newline at end of file
diff --git a/src/Equinox.SqlStreamStore/Equinox.SqlStreamStore.fsproj b/src/Equinox.SqlStreamStore/Equinox.SqlStreamStore.fsproj
index 9454e4b78..8f5feeeea 100644
--- a/src/Equinox.SqlStreamStore/Equinox.SqlStreamStore.fsproj
+++ b/src/Equinox.SqlStreamStore/Equinox.SqlStreamStore.fsproj
@@ -25,7 +25,7 @@
     <PackageReference Include="FSharp.Core" Version="4.3.4" Condition=" '$(TargetFramework)' == 'netstandard2.0' " />
 
     <PackageReference Include="FsCodec" Version="2.0.0" />
-    <PackageReference Include="FSharp.Control.AsyncSeq" Version="2.0.21" />
+    <PackageReference Include="FSharp.Control.AsyncSeq" Version="2.0.23" />
     <PackageReference Include="SqlStreamStore" Version="1.2.0-beta.8" />
   </ItemGroup>
 
diff --git a/tests/Equinox.Cosmos.Integration/Equinox.Cosmos.Integration.fsproj b/tests/Equinox.Cosmos.Integration/Equinox.Cosmos.Integration.fsproj
index d23f3f845..2355db821 100644
--- a/tests/Equinox.Cosmos.Integration/Equinox.Cosmos.Integration.fsproj
+++ b/tests/Equinox.Cosmos.Integration/Equinox.Cosmos.Integration.fsproj
@@ -1,11 +1,10 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>$(TestTargetFrameworks)</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <WarningLevel>5</WarningLevel>
     <DisableImplicitSystemValueTupleReference>true</DisableImplicitSystemValueTupleReference>
-    <DefineConstants Condition=" '$(TargetFramework)' == 'net461' ">NET461</DefineConstants>
   </PropertyGroup>
 
   <ItemGroup>
@@ -30,7 +29,6 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.3.0" />
     <PackageReference Include="Microsoft.Azure.Cosmos.Direct" Version="3.1.4" />
     <PackageReference Include="Serilog.Sinks.Seq" Version="4.0.0" />
-    <Reference Include="System.Runtime.Caching" Condition=" '$(TargetFramework)' != 'netstandard2.0'" />
     <PackageReference Include="unquote" Version="4.0" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.1" />
diff --git a/tools/Equinox.Tool/Equinox.Tool.fsproj b/tools/Equinox.Tool/Equinox.Tool.fsproj
index be20ffd19..97da5bb79 100644
--- a/tools/Equinox.Tool/Equinox.Tool.fsproj
+++ b/tools/Equinox.Tool/Equinox.Tool.fsproj
@@ -1,14 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1;net461</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1</TargetFrameworks>
     <OutputType>Exe</OutputType>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
     <WarningLevel>5</WarningLevel>
     <IsTestProject>false</IsTestProject>
     <DisableImplicitFSharpCoreReference>true</DisableImplicitFSharpCoreReference>
     <DisableImplicitSystemValueTupleReference>true</DisableImplicitSystemValueTupleReference>
-    <DefineConstants Condition=" '$(TargetFramework)' == 'net461' ">$(DefineConstants);NET461</DefineConstants>
 
     <PackageId>Equinox.Tool</PackageId>
     <AssemblyName>eqx</AssemblyName>
@@ -45,20 +44,6 @@
     <PackageReference Include="Serilog.Sinks.Seq" Version="4.0.0" />
   </ItemGroup>
 
-  <!-- bundle the net461 exe inside the .net core tool package -->
-  <PropertyGroup Condition=" '$(PackAsTool)' == 'true' ">
-    <TargetFrameworks></TargetFrameworks>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
-  </PropertyGroup>
-
-  <ItemGroup Condition=" '$(PackAsTool)' == 'true' ">
-    <Content Include="$(ThisDirAbsolute)/bin/equinox-tool/net461/*">
-      <Pack>true</Pack>
-      <PackagePath>tools\net461\any\%(Filename)%(Extension)</PackagePath>
-      <Visible>true</Visible>
-    </Content>
-  </ItemGroup>
-
   <!-- workaround for not being able to make Backend and Domain as inlined in a complete way https://github.com/nuget/home/issues/3891#issuecomment-377319939 -->
   <Target Name="CopyProjectReferencesToPackage" DependsOnTargets="ResolveReferences">
     <ItemGroup>