diff --git a/cpp/autobuilder/Semmle.Autobuild.Cpp.Tests/Semmle.Autobuild.Cpp.Tests.csproj b/cpp/autobuilder/Semmle.Autobuild.Cpp.Tests/Semmle.Autobuild.Cpp.Tests.csproj
index abf4f358a24..0c9f70c6d6d 100644
--- a/cpp/autobuilder/Semmle.Autobuild.Cpp.Tests/Semmle.Autobuild.Cpp.Tests.csproj
+++ b/cpp/autobuilder/Semmle.Autobuild.Cpp.Tests/Semmle.Autobuild.Cpp.Tests.csproj
@@ -11,12 +11,12 @@
   <ItemGroup>
     <PackageReference Include="System.IO.FileSystem" Version="4.3.0" />
     <PackageReference Include="System.IO.FileSystem.Primitives" Version="4.3.0" />
-    <PackageReference Include="xunit" Version="2.5.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.0">
+    <PackageReference Include="xunit" Version="2.4.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/cpp/autobuilder/Semmle.Autobuild.Cpp/Semmle.Autobuild.Cpp.csproj b/cpp/autobuilder/Semmle.Autobuild.Cpp/Semmle.Autobuild.Cpp.csproj
index 5e0d40cdfe2..f8f5c285074 100644
--- a/cpp/autobuilder/Semmle.Autobuild.Cpp/Semmle.Autobuild.Cpp.csproj
+++ b/cpp/autobuilder/Semmle.Autobuild.Cpp/Semmle.Autobuild.Cpp.csproj
@@ -17,7 +17,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Build" Version="17.7.2" />
+    <PackageReference Include="Microsoft.Build" Version="17.3.2" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/csharp/autobuilder/Semmle.Autobuild.CSharp.Tests/Semmle.Autobuild.CSharp.Tests.csproj b/csharp/autobuilder/Semmle.Autobuild.CSharp.Tests/Semmle.Autobuild.CSharp.Tests.csproj
index ecc67fa5695..590c03738b0 100644
--- a/csharp/autobuilder/Semmle.Autobuild.CSharp.Tests/Semmle.Autobuild.CSharp.Tests.csproj
+++ b/csharp/autobuilder/Semmle.Autobuild.CSharp.Tests/Semmle.Autobuild.CSharp.Tests.csproj
@@ -8,12 +8,12 @@
 	<ItemGroup>
 		<PackageReference Include="System.IO.FileSystem" Version="4.3.0" />
 		<PackageReference Include="System.IO.FileSystem.Primitives" Version="4.3.0" />
-		<PackageReference Include="xunit" Version="2.5.0" />
-		<PackageReference Include="xunit.runner.visualstudio" Version="2.5.0">
+		<PackageReference Include="xunit" Version="2.4.2" />
+		<PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">
 			<PrivateAssets>all</PrivateAssets>
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
 		</PackageReference>
-		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.1" />
+		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.0" />
 	</ItemGroup>
 	<ItemGroup>
 		<ProjectReference Include="..\Semmle.Autobuild.CSharp\Semmle.Autobuild.CSharp.csproj" />
diff --git a/csharp/autobuilder/Semmle.Autobuild.CSharp/Semmle.Autobuild.CSharp.csproj b/csharp/autobuilder/Semmle.Autobuild.CSharp/Semmle.Autobuild.CSharp.csproj
index 6edc9fdcd97..1083564dd26 100644
--- a/csharp/autobuilder/Semmle.Autobuild.CSharp/Semmle.Autobuild.CSharp.csproj
+++ b/csharp/autobuilder/Semmle.Autobuild.CSharp/Semmle.Autobuild.CSharp.csproj
@@ -3,9 +3,9 @@
 		<TargetFramework>net7.0</TargetFramework>
 		<AssemblyName>Semmle.Autobuild.CSharp</AssemblyName>
 		<RootNamespace>Semmle.Autobuild.CSharp</RootNamespace>
-		<ApplicationIcon />
+		<ApplicationIcon/>
 		<OutputType>Exe</OutputType>
-		<StartupObject />
+		<StartupObject/>
 		<GenerateAssemblyInfo>false</GenerateAssemblyInfo>
 		<RuntimeIdentifiers>win-x64;linux-x64;osx-x64</RuntimeIdentifiers>
 		<Nullable>enable</Nullable>
@@ -14,8 +14,8 @@
 		<Folder Include="Properties\" />
 	</ItemGroup>
 	<ItemGroup>
-		<PackageReference Include="Microsoft.Build" Version="17.7.2" />
-		<PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+		<PackageReference Include="Microsoft.Build" Version="17.3.2" />
+		<PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
 	</ItemGroup>
 	<ItemGroup>
 		<ProjectReference Include="..\..\extractor\Semmle.Util\Semmle.Util.csproj" />
diff --git a/csharp/autobuilder/Semmle.Autobuild.Shared/Semmle.Autobuild.Shared.csproj b/csharp/autobuilder/Semmle.Autobuild.Shared/Semmle.Autobuild.Shared.csproj
index 83c53552cc0..7a1f537fe75 100644
--- a/csharp/autobuilder/Semmle.Autobuild.Shared/Semmle.Autobuild.Shared.csproj
+++ b/csharp/autobuilder/Semmle.Autobuild.Shared/Semmle.Autobuild.Shared.csproj
@@ -11,7 +11,7 @@
 		<Folder Include="Properties\" />
 	</ItemGroup>
 	<ItemGroup>
-		<PackageReference Include="Microsoft.Build" Version="17.7.2" />
+		<PackageReference Include="Microsoft.Build" Version="17.3.2" />
 	</ItemGroup>
 	<ItemGroup>
 		<ProjectReference Include="..\..\extractor\Semmle.Util\Semmle.Util.csproj" />
diff --git a/csharp/extractor/Semmle.Extraction.CIL/Semmle.Extraction.CIL.csproj b/csharp/extractor/Semmle.Extraction.CIL/Semmle.Extraction.CIL.csproj
index c37242cd890..5bf70a9346b 100644
--- a/csharp/extractor/Semmle.Extraction.CIL/Semmle.Extraction.CIL.csproj
+++ b/csharp/extractor/Semmle.Extraction.CIL/Semmle.Extraction.CIL.csproj
@@ -24,7 +24,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.DiaSymReader" Version="2.0.0" />
+    <PackageReference Include="Microsoft.DiaSymReader" Version="1.4.0" />
     <PackageReference Include="Microsoft.DiaSymReader.Native" Version="1.7.0" />
     <PackageReference Include="Microsoft.DiaSymReader.PortablePdb" Version="1.6.0"><IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
 <PrivateAssets>all</PrivateAssets>
diff --git a/csharp/extractor/Semmle.Extraction.CSharp.Standalone/Semmle.Extraction.CSharp.Standalone.csproj b/csharp/extractor/Semmle.Extraction.CSharp.Standalone/Semmle.Extraction.CSharp.Standalone.csproj
index 38ba70ce285..525b1081bff 100644
--- a/csharp/extractor/Semmle.Extraction.CSharp.Standalone/Semmle.Extraction.CSharp.Standalone.csproj
+++ b/csharp/extractor/Semmle.Extraction.CSharp.Standalone/Semmle.Extraction.CSharp.Standalone.csproj
@@ -6,7 +6,7 @@
 		<RootNamespace>Semmle.Extraction.CSharp.Standalone</RootNamespace>
 		<GenerateAssemblyInfo>false</GenerateAssemblyInfo>
 		<TreatWarningsAsErrors>false</TreatWarningsAsErrors>
-		<WarningsAsErrors />
+		<WarningsAsErrors/>
 		<RuntimeIdentifiers>win-x64;linux-x64;osx-x64</RuntimeIdentifiers>
 		<Nullable>enable</Nullable>
 	</PropertyGroup>
@@ -19,7 +19,7 @@
 		<Folder Include="Properties\" />
 	</ItemGroup>
 	<ItemGroup>
-		<PackageReference Include="Microsoft.Build" Version="17.7.2" />
+		<PackageReference Include="Microsoft.Build" Version="17.3.2" />
 		<PackageReference Include="Microsoft.Win32.Primitives" Version="4.3.0" />
 		<PackageReference Include="System.Net.Primitives" Version="4.3.1" />
 		<PackageReference Include="System.Security.Principal" Version="4.3.0" />
diff --git a/csharp/extractor/Semmle.Extraction.CSharp/Semmle.Extraction.CSharp.csproj b/csharp/extractor/Semmle.Extraction.CSharp/Semmle.Extraction.CSharp.csproj
index 4227a1df710..a06a1df38f2 100644
--- a/csharp/extractor/Semmle.Extraction.CSharp/Semmle.Extraction.CSharp.csproj
+++ b/csharp/extractor/Semmle.Extraction.CSharp/Semmle.Extraction.CSharp.csproj
@@ -18,7 +18,7 @@
 		<Folder Include="Properties\" />
 	</ItemGroup>
 	<ItemGroup>
-		<PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.7.0" />
-		<PackageReference Include="Microsoft.Build" Version="17.7.2" />
+		<PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.4.0" />
+		<PackageReference Include="Microsoft.Build" Version="17.3.2" />
 	</ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/csharp/extractor/Semmle.Extraction.Tests/Semmle.Extraction.Tests.csproj b/csharp/extractor/Semmle.Extraction.Tests/Semmle.Extraction.Tests.csproj
index 4e04bafc638..92bf46deb44 100644
--- a/csharp/extractor/Semmle.Extraction.Tests/Semmle.Extraction.Tests.csproj
+++ b/csharp/extractor/Semmle.Extraction.Tests/Semmle.Extraction.Tests.csproj
@@ -8,12 +8,12 @@
 	<ItemGroup>
 		<PackageReference Include="System.IO.FileSystem" Version="4.3.0" />
 		<PackageReference Include="System.IO.FileSystem.Primitives" Version="4.3.0" />
-		<PackageReference Include="xunit" Version="2.5.0" />
-		<PackageReference Include="xunit.runner.visualstudio" Version="2.5.0">
+		<PackageReference Include="xunit" Version="2.4.2" />
+		<PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">
 			<PrivateAssets>all</PrivateAssets>
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
 		</PackageReference>
-		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.1" />
+		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.0" />
 	</ItemGroup>
 	<ItemGroup>
 		<ProjectReference Include="..\Semmle.Extraction.CSharp.Standalone\Semmle.Extraction.CSharp.Standalone.csproj" />
diff --git a/csharp/extractor/Semmle.Extraction/Semmle.Extraction.csproj b/csharp/extractor/Semmle.Extraction/Semmle.Extraction.csproj
index 1c15b614ce4..433bb15ab1f 100644
--- a/csharp/extractor/Semmle.Extraction/Semmle.Extraction.csproj
+++ b/csharp/extractor/Semmle.Extraction/Semmle.Extraction.csproj
@@ -12,9 +12,9 @@
 		<DefineConstants>TRACE;DEBUG;DEBUG_LABELS</DefineConstants>
 	</PropertyGroup>
 	<ItemGroup>
-		<PackageReference Include="Microsoft.Build" Version="17.7.2" />
-		<PackageReference Include="Microsoft.CodeAnalysis" Version="4.7.0" />
-		<PackageReference Include="GitInfo" Version="3.3.1">
+		<PackageReference Include="Microsoft.Build" Version="17.3.2" />
+		<PackageReference Include="Microsoft.CodeAnalysis" Version="4.4.0" />
+		<PackageReference Include="GitInfo" Version="2.2.0">
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
 			<PrivateAssets>all</PrivateAssets>
 		</PackageReference>
diff --git a/csharp/extractor/Semmle.Util.Tests/Semmle.Util.Tests.csproj b/csharp/extractor/Semmle.Util.Tests/Semmle.Util.Tests.csproj
index cb362f6df33..384555bf18c 100644
--- a/csharp/extractor/Semmle.Util.Tests/Semmle.Util.Tests.csproj
+++ b/csharp/extractor/Semmle.Util.Tests/Semmle.Util.Tests.csproj
@@ -6,12 +6,12 @@
 		<Nullable>enable</Nullable>
 	</PropertyGroup>
 	<ItemGroup>
-		<PackageReference Include="xunit" Version="2.5.0" />
-		<PackageReference Include="xunit.runner.visualstudio" Version="2.5.0">
+		<PackageReference Include="xunit" Version="2.4.2" />
+		<PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">
 			<PrivateAssets>all</PrivateAssets>
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
 		</PackageReference>
-		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.1" />
+		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.0" />
 	</ItemGroup>
 	<ItemGroup>
 		<ProjectReference Include="..\Semmle.Util\Semmle.Util.csproj" />
diff --git a/csharp/extractor/Semmle.Util/Semmle.Util.csproj b/csharp/extractor/Semmle.Util/Semmle.Util.csproj
index b2f15484886..894488f9f84 100644
--- a/csharp/extractor/Semmle.Util/Semmle.Util.csproj
+++ b/csharp/extractor/Semmle.Util/Semmle.Util.csproj
@@ -15,7 +15,7 @@
 
   <ItemGroup>
     <PackageReference Include="Mono.Posix.NETStandard" Version="1.0.0" />
-    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
   </ItemGroup>
 
 </Project>
diff --git a/csharp/ql/integration-tests/posix-only/dotnet_test/dotnet_test.csproj b/csharp/ql/integration-tests/posix-only/dotnet_test/dotnet_test.csproj
index 5ea4974db7f..968726df756 100644
--- a/csharp/ql/integration-tests/posix-only/dotnet_test/dotnet_test.csproj
+++ b/csharp/ql/integration-tests/posix-only/dotnet_test/dotnet_test.csproj
@@ -8,10 +8,10 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.0" />
     <PackageReference Include="NUnit" Version="3.13.3" />
-    <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
-    <PackageReference Include="coverlet.collector" Version="6.0.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.3.0" />
+    <PackageReference Include="coverlet.collector" Version="3.2.0" />
   </ItemGroup>
 
 </Project>
diff --git a/csharp/ql/integration-tests/posix-only/dotnet_test_mstest/dotnet_test_mstest.csproj b/csharp/ql/integration-tests/posix-only/dotnet_test_mstest/dotnet_test_mstest.csproj
index dfa6909c44b..95c7586e04e 100644
--- a/csharp/ql/integration-tests/posix-only/dotnet_test_mstest/dotnet_test_mstest.csproj
+++ b/csharp/ql/integration-tests/posix-only/dotnet_test_mstest/dotnet_test_mstest.csproj
@@ -10,10 +10,10 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.1" />
-    <PackageReference Include="MSTest.TestAdapter" Version="3.1.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.1.1" />
-    <PackageReference Include="coverlet.collector" Version="6.0.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.2" />
+    <PackageReference Include="MSTest.TestAdapter" Version="2.2.10" />
+    <PackageReference Include="MSTest.TestFramework" Version="2.2.10" />
+    <PackageReference Include="coverlet.collector" Version="3.1.2" />
   </ItemGroup>
 
 </Project>