diff --git a/LightweightIocContainer/LightweightIocContainer.csproj b/LightweightIocContainer/LightweightIocContainer.csproj
index d6c6e84..3f9b48d 100644
--- a/LightweightIocContainer/LightweightIocContainer.csproj
+++ b/LightweightIocContainer/LightweightIocContainer.csproj
@@ -37,7 +37,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="JetBrains.Annotations" Version="2019.1.1" />
+    <PackageReference Include="JetBrains.Annotations" Version="2019.1.3" />
     <PackageReference Include="System.Reflection.Emit" Version="4.3.0" />
     <PackageReference Include="System.ValueTuple" Version="4.5.0" />
   </ItemGroup>
diff --git a/Test.LightweightIocContainer/Test.LightweightIocContainer.csproj b/Test.LightweightIocContainer/Test.LightweightIocContainer.csproj
index 39e4cfa..c13eaed 100644
--- a/Test.LightweightIocContainer/Test.LightweightIocContainer.csproj
+++ b/Test.LightweightIocContainer/Test.LightweightIocContainer.csproj
@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="JetBrains.Annotations" Version="2019.1.1" />
+    <PackageReference Include="JetBrains.Annotations" Version="2019.1.3" />
     <PackageReference Include="Moq" Version="4.12.0" />
     <PackageReference Include="nunit" Version="3.12.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="3.13.0" />