diff --git a/src/DynamicData.Profile/DynamicData.Profile.csproj b/src/DynamicData.Profile/DynamicData.Profile.csproj
index e95e56540..f225bded6 100644
--- a/src/DynamicData.Profile/DynamicData.Profile.csproj
+++ b/src/DynamicData.Profile/DynamicData.Profile.csproj
@@ -9,7 +9,7 @@
   </ItemGroup>
   
   <ItemGroup>
-    <PackageReference Include="System.Reactive" Version="4.1.6" />
+    <PackageReference Include="System.Reactive" Version="4.2.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/DynamicData.Tests/DynamicData.Tests.csproj b/src/DynamicData.Tests/DynamicData.Tests.csproj
index ee7747fba..9b89eb42b 100644
--- a/src/DynamicData.Tests/DynamicData.Tests.csproj
+++ b/src/DynamicData.Tests/DynamicData.Tests.csproj
@@ -9,7 +9,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="System.Reactive" Version="4.1.6" />
+    <PackageReference Include="System.Reactive" Version="4.2.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/DynamicData/DynamicData.csproj b/src/DynamicData/DynamicData.csproj
index ce8250cc8..c1da8950c 100644
--- a/src/DynamicData/DynamicData.csproj
+++ b/src/DynamicData/DynamicData.csproj
@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="System.Reactive" Version="4.1.6" />
+    <PackageReference Include="System.Reactive" Version="4.2.0" />
   </ItemGroup>
 
   <PropertyGroup>