diff --git a/CryptoTickerBot.Collections/CryptoTickerBot.Collections.csproj b/CryptoTickerBot.Collections/CryptoTickerBot.Collections.csproj
index f7a94c4..dc3ec1c 100644
--- a/CryptoTickerBot.Collections/CryptoTickerBot.Collections.csproj
+++ b/CryptoTickerBot.Collections/CryptoTickerBot.Collections.csproj
@@ -8,7 +8,7 @@
   <ItemGroup>
     <PackageReference Include="Newtonsoft.Json" Version="12.0.1" />
     <PackageReference Include="Polly" Version="6.1.2" />
-    <PackageReference Include="System.Collections.Immutable" Version="1.5.0" />
+    <PackageReference Include="System.Collections.Immutable" Version="1.7.1" />
     <PackageReference Include="System.Reactive" Version="4.1.2" />
   </ItemGroup>
 
diff --git a/CryptoTickerBot.Data/CryptoTickerBot.Data.csproj b/CryptoTickerBot.Data/CryptoTickerBot.Data.csproj
index f8b7496..ebd4ea6 100644
--- a/CryptoTickerBot.Data/CryptoTickerBot.Data.csproj
+++ b/CryptoTickerBot.Data/CryptoTickerBot.Data.csproj
@@ -16,7 +16,7 @@
     <PackageReference Include="NLog.Config" Version="4.5.11" />
     <PackageReference Include="Polly" Version="6.1.2" />
     <PackageReference Include="SharpRaven" Version="2.4.0" />
-    <PackageReference Include="System.Collections.Immutable" Version="1.5.0" />
+    <PackageReference Include="System.Collections.Immutable" Version="1.7.1" />
     <PackageReference Include="Tababular" Version="3.0.0" />
   </ItemGroup>