diff --git a/Tests/TicketManager.Tests/TicketManager.Tests.csproj b/Tests/TicketManager.Tests/TicketManager.Tests.csproj
index ae43c8f..e070229 100644
--- a/Tests/TicketManager.Tests/TicketManager.Tests.csproj
+++ b/Tests/TicketManager.Tests/TicketManager.Tests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>netcoreapp3.0</TargetFramework>
     <IsPackable>false</IsPackable>
   </PropertyGroup>
   <ItemGroup>
diff --git a/TicketManager.csproj b/TicketManager.csproj
index d68b951..25f22b5 100644
--- a/TicketManager.csproj
+++ b/TicketManager.csproj
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk.Web">
     <PropertyGroup>
-        <TargetFramework>netcoreapp3.1</TargetFramework>
+        <TargetFramework>netcoreapp3.0</TargetFramework>
     </PropertyGroup>
     <PropertyGroup>
         <LangVersion>8.0</LangVersion>
@@ -13,24 +13,24 @@
     <ItemGroup>
     </ItemGroup>
     <ItemGroup>
-        <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="3.1.2" />
-        <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="3.1.1" />
-        <PackageReference Include="Microsoft.AspNetCore.SpaServices" Version="3.1.1" />
-        <PackageReference Include="Microsoft.AspNetCore.SpaServices.Extensions" Version="3.1.1" />
-        <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="3.1.1">
+        <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="3.0.2" />
+        <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="3.0.2" />
+        <PackageReference Include="Microsoft.AspNetCore.SpaServices" Version="3.0.2" />
+        <PackageReference Include="Microsoft.AspNetCore.SpaServices.Extensions" Version="3.0.2" />
+        <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="3.0.1">
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
             <PrivateAssets>all</PrivateAssets>
         </PackageReference>
-        <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="3.1.1" />
-        <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="3.1.1" />
-        <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="3.1.1" />
-        <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="3.1.1" />
+        <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="3.0.1" />
+        <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="3.0.1" />
+        <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="3.0.1" />
+        <!-- <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="3.0.1" /> -->
         <PackageReference Include="Microsoft.OpenApi" Version="1.1.4" />
-        <PackageReference Include="Moq" Version="4.13.1" />
+        <PackageReference Include="Moq" Version="4.13.0" />
         <PackageReference Include="Swashbuckle.AspNetCore" Version="5.0.0" />
         <PackageReference Include="Swashbuckle.AspNetCore.Newtonsoft" Version="5.0.0" />
         <PackageReference Include="Xunit" Version="2.4.1" />
-        <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="3.1.1">
+        <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="3.0.1">
           <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
           <PrivateAssets>all</PrivateAssets>
         </PackageReference>