diff --git a/src/Npgsql/Npgsql.csproj b/src/Npgsql/Npgsql.csproj
index c8d596514a..a94af31f09 100644
--- a/src/Npgsql/Npgsql.csproj
+++ b/src/Npgsql/Npgsql.csproj
@@ -51,7 +51,7 @@
     <PackageReference Include="System.Diagnostics.Process" Version="4.3.0" />
     <PackageReference Include="System.Globalization.Extensions" Version="4.3.0" />
     <PackageReference Include="System.Net.NameResolution" Version="4.3.0" />
-    <PackageReference Include="System.Net.Security" Version="4.3.0" />
+    <PackageReference Include="System.Net.Security" Version="4.3.1" />
     <PackageReference Include="System.Net.NetworkInformation" Version="4.3.0" />
     <PackageReference Include="System.Reflection.TypeExtensions" Version="4.3.0" />
     <PackageReference Include="System.Threading.Thread" Version="4.3.0" />