diff --git a/dockerfiles/build_nng/Dockerfile b/dockerfiles/build_nng/Dockerfile
index 2982b3e..fbb17a8 100644
--- a/dockerfiles/build_nng/Dockerfile
+++ b/dockerfiles/build_nng/Dockerfile
@@ -15,7 +15,7 @@ RUN apt-get update && apt-get install -y \
     git
 
 ARG SRC
-ARG NNG_BRANCH=v1.3.0
+ARG NNG_BRANCH=v1.3.1
 WORKDIR ${SRC}
 
 RUN git clone https://github.com/nanomsg/nng.git \
diff --git a/nng.NETCore/nng.NETCore.csproj b/nng.NETCore/nng.NETCore.csproj
index 78be22c..afe2602 100644
--- a/nng.NETCore/nng.NETCore.csproj
+++ b/nng.NETCore/nng.NETCore.csproj
@@ -10,8 +10,8 @@
     <!-- Including assembly as part of runtimes/ so don't want it placed in lib/ -->
     <IncludeBuildOutput>false</IncludeBuildOutput>
     <PackageId>Subor.nng.NETCore</PackageId>
-    <PackageVersion>1.3.0-rc1</PackageVersion>
-    <Version>1.3.0.1</Version>
+    <PackageVersion>1.3.1-rc0</PackageVersion>
+    <Version>1.3.1.0</Version>
     <!-- Needed to avoid `error NU5128` when running `dotnet pack`.
     Assemblies for targetted frameworks are in runtimes/ instead of lib/ or ref/ 
     See: https://docs.microsoft.com/en-us/nuget/reference/errors-and-warnings/nu5128#scenario-2
diff --git a/nng.NETCore/runtimes/linux-arm/native/libnng.so b/nng.NETCore/runtimes/linux-arm/native/libnng.so
index 4b07faa..c0aaf42 100755
Binary files a/nng.NETCore/runtimes/linux-arm/native/libnng.so and b/nng.NETCore/runtimes/linux-arm/native/libnng.so differ
diff --git a/nng.NETCore/runtimes/linux-arm64/native/libnng.so b/nng.NETCore/runtimes/linux-arm64/native/libnng.so
index fa12a2f..e0b70e2 100755
Binary files a/nng.NETCore/runtimes/linux-arm64/native/libnng.so and b/nng.NETCore/runtimes/linux-arm64/native/libnng.so differ
diff --git a/nng.NETCore/runtimes/linux-x64/native/libnng.so b/nng.NETCore/runtimes/linux-x64/native/libnng.so
index 41794c7..e36f4a0 100755
Binary files a/nng.NETCore/runtimes/linux-x64/native/libnng.so and b/nng.NETCore/runtimes/linux-x64/native/libnng.so differ
diff --git a/nng.NETCore/runtimes/osx-x64/native/libnng.dylib b/nng.NETCore/runtimes/osx-x64/native/libnng.dylib
index e48f820..986ff70 100755
Binary files a/nng.NETCore/runtimes/osx-x64/native/libnng.dylib and b/nng.NETCore/runtimes/osx-x64/native/libnng.dylib differ
diff --git a/nng.NETCore/runtimes/win-x64/native/nng.dll b/nng.NETCore/runtimes/win-x64/native/nng.dll
index 7b32b43..3641177 100644
Binary files a/nng.NETCore/runtimes/win-x64/native/nng.dll and b/nng.NETCore/runtimes/win-x64/native/nng.dll differ
diff --git a/nng.NETCore/runtimes/win-x86/native/nng.dll b/nng.NETCore/runtimes/win-x86/native/nng.dll
index 3955237..9a10616 100644
Binary files a/nng.NETCore/runtimes/win-x86/native/nng.dll and b/nng.NETCore/runtimes/win-x86/native/nng.dll differ
diff --git a/nng.Shared/nng.Shared.csproj b/nng.Shared/nng.Shared.csproj
index e4a7f7b..ee48e56 100644
--- a/nng.Shared/nng.Shared.csproj
+++ b/nng.Shared/nng.Shared.csproj
@@ -10,8 +10,8 @@
 
   <PropertyGroup>
     <PackageId>Subor.nng.NETCore.Shared</PackageId>
-    <PackageVersion>1.3.0-rc1</PackageVersion>
-    <Version>1.3.0.1</Version>
+    <PackageVersion>1.3.1-rc0</PackageVersion>
+    <Version>1.3.1.0</Version>
 
     <PackageOutputPath>../bin/$(Configuration)</PackageOutputPath>
   </PropertyGroup>
diff --git a/scripts/build_nng.ps1 b/scripts/build_nng.ps1
index bebf7c5..bb260b2 100755
--- a/scripts/build_nng.ps1
+++ b/scripts/build_nng.ps1
@@ -31,6 +31,7 @@ $current_dir = $(Get-Location)
 try {
     if ($IsLinux) {
         docker build -t jeikabu/build-nng dockerfiles/build_nng
+        docker run --rm --privileged multiarch/qemu-user-static:register
         docker run -i -t --rm -v "$PWD/nng.NETCore/runtimes:/runtimes" jeikabu/build-nng
     }
     else {