diff --git a/src/WebSocket.Rx/WebSocket.Rx.csproj b/src/WebSocket.Rx/WebSocket.Rx.csproj
index 2cb3714..5a04300 100644
--- a/src/WebSocket.Rx/WebSocket.Rx.csproj
+++ b/src/WebSocket.Rx/WebSocket.Rx.csproj
@@ -37,7 +37,7 @@
         <PackageReference Include="Microsoft.DotNet.ILCompiler" Version="10.0.5"/>
         <PackageReference Include="Microsoft.NET.ILLink.Tasks" Version="10.0.5"/>
         <PackageReference Include="Microsoft.IO.RecyclableMemoryStream" Version="[3.0.1,)"/>
-        <PackageReference Include="R3" Version="[1.3.0,)"/>
+        <PackageReference Include="R3" Version="1.3.1"/>
     </ItemGroup>
 
     <ItemGroup>
diff --git a/src/WebSocket.Rx/packages.lock.json b/src/WebSocket.Rx/packages.lock.json
index c6a263d..b5f2dba 100644
--- a/src/WebSocket.Rx/packages.lock.json
+++ b/src/WebSocket.Rx/packages.lock.json
@@ -22,9 +22,9 @@
       },
       "R3": {
         "type": "Direct",
-        "requested": "[1.3.0, )",
-        "resolved": "1.3.0",
-        "contentHash": "c4bL37HGimYon/qfRTZOJE41M3cgdMJn/p4O5Jq+WHTJGNXUb1x2DlVI+iZk5phCBwq3ERfrgbaPu9WdG2OS+w=="
+        "requested": "[1.3.1, )",
+        "resolved": "1.3.1",
+        "contentHash": "HzZ2wGlkxOgpMhtTtJkBUP5xiKqeH5P9oD0Ll1JfO8mMyA75u0zwDssN/TGb1/5EIOY0Vuv07unyVtAaPmV6Tg=="
       }
     }
   }