diff --git a/csharp/src/Apache.Arrow.Flight/Apache.Arrow.Flight.csproj b/csharp/src/Apache.Arrow.Flight/Apache.Arrow.Flight.csproj
index 65236c360bb7e..944a5add28d7b 100644
--- a/csharp/src/Apache.Arrow.Flight/Apache.Arrow.Flight.csproj
+++ b/csharp/src/Apache.Arrow.Flight/Apache.Arrow.Flight.csproj
@@ -8,7 +8,7 @@
     <PackageReference Include="Google.Protobuf" Version="3.28.3" />
     <PackageReference Include="Grpc.Net.Client" Version="2.65.0" />
     <PackageReference Include="Grpc.Tools" Version="2.67.0" PrivateAssets="All" />
-    <PackageReference Include="System.Memory" Version="4.5.5" />
+    <PackageReference Include="System.Memory" Version="4.6.0" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)'=='netstandard2.0'">
diff --git a/csharp/src/Apache.Arrow/Apache.Arrow.csproj b/csharp/src/Apache.Arrow/Apache.Arrow.csproj
index ec242eae64d04..301894f93708d 100644
--- a/csharp/src/Apache.Arrow/Apache.Arrow.csproj
+++ b/csharp/src/Apache.Arrow/Apache.Arrow.csproj
@@ -12,8 +12,8 @@
   </PropertyGroup>
 
   <ItemGroup Condition="'$(TargetFrameworkIdentifier)' == '.NETStandard' or '$(TargetFramework)' == 'net462'">
-    <PackageReference Include="System.Buffers" Version="4.5.1" />
-    <PackageReference Include="System.Memory" Version="4.5.5" />
+    <PackageReference Include="System.Buffers" Version="4.6.0" />
+    <PackageReference Include="System.Memory" Version="4.6.0" />
     <PackageReference Include="System.Runtime.CompilerServices.Unsafe" Version="6.1.0" />
     <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.6.0" />
     <PackageReference Include="System.ValueTuple" Version="4.5.0" />