diff --git a/source/Octopus.Tentacle/Octopus.Tentacle.csproj b/source/Octopus.Tentacle/Octopus.Tentacle.csproj
index c5a814c15..4ebac15aa 100644
--- a/source/Octopus.Tentacle/Octopus.Tentacle.csproj
+++ b/source/Octopus.Tentacle/Octopus.Tentacle.csproj
@@ -57,8 +57,9 @@
 	</ItemGroup>
 	<ItemGroup>
 		<PackageReference Include="Autofac" Version="4.6.2" />
-		<PackageReference Include="NuGet.Packaging" Version="3.6.0-octopus-58692" />
+		<PackageReference Include="NuGet.Packaging" Version="6.14.1-release.3901" />
 		<PackageReference Include="Octopus.Time" Version="1.1.339" />
+		<PackageReference Include="Octopus.Versioning" Version="5.1.883" />
 		<PackageReference Include="TaskScheduler" Version="2.7.2" />
 		<PackageReference Include="Nito.AsyncEx" Version="5.0.0" />
 		<PackageReference Include="NLog" Version="5.0.4" />
diff --git a/source/Octopus.Tentacle/Packages/NuGetPackageInstaller.cs b/source/Octopus.Tentacle/Packages/NuGetPackageInstaller.cs
index fc5ecabc3..f089cda1f 100644
--- a/source/Octopus.Tentacle/Packages/NuGetPackageInstaller.cs
+++ b/source/Octopus.Tentacle/Packages/NuGetPackageInstaller.cs
@@ -29,10 +29,24 @@ public int Install(string packageFile, string directory, ILog log, bool suppress
 
         public int Install(Stream packageStream, string directory, ILog log, bool suppressNestedScriptWarning)
         {
-            var extracted = PackageExtractor.ExtractPackage(packageStream,
-                new SuppliedDirectoryPackagePathResolver(directory),
-                new PackageExtractionContext(NullLogger.Instance) { PackageSaveMode = PackageSaveMode.Files, XmlDocFileSaveMode = XmlDocFileSaveMode.None, CopySatelliteFiles = false },
-                CancellationToken.None);
+            // The 'source' parameter is used for logging/tracking purposes in NuGet's new API.
+            // It can be null or any string identifier. We use null here as we don't need tracking.
+            // Signature verification is bypassed by passing null for ClientPolicyContext (3rd param in PackageExtractionContext).
+            var extracted = PackageExtractor.ExtractPackageAsync(
+                    null, // source - not needed for our use case and can be null because ClientPolicyContext is null.
+                    packageStream,
+                    new SuppliedDirectoryPackagePathResolver(directory),
+                    new PackageExtractionContext(
+                        PackageSaveMode.Files,
+                        XmlDocFileSaveMode.None,
+                        null, // ClientPolicyContext - null bypasses signature verification
+                        NullLogger.Instance)
+                    {
+                        CopySatelliteFiles = false
+                    },
+                    CancellationToken.None)
+                .GetAwaiter()
+                .GetResult();
 
             return extracted.Count();
         }
diff --git a/source/Octopus.Tentacle/Properties/OctopusTentacle.cs b/source/Octopus.Tentacle/Properties/OctopusTentacle.cs
index 2a3a15d08..dfe0605b4 100644
--- a/source/Octopus.Tentacle/Properties/OctopusTentacle.cs
+++ b/source/Octopus.Tentacle/Properties/OctopusTentacle.cs
@@ -1,8 +1,7 @@
 using System.Reflection;
-using Octopus.Client.Model;
 using Octopus.Tentacle.Util;
 using Octopus.Tentacle.Versioning;
-using AssemblyExtensions = Octopus.Tentacle.Versioning.AssemblyExtensions;
+using Octopus.Versioning.Semver;
 
 namespace Octopus.Tentacle.Properties
 {
@@ -10,8 +9,8 @@ public static class OctopusTentacle
     {
         public static readonly Assembly Assembly = typeof (OctopusTentacle).Assembly;
         public static readonly string InformationalVersion = Assembly.GetInformationalVersion() ?? "0.0.0";
-        public static readonly SemanticVersionInfo SemanticVersionInfo = new SemanticVersionInfo(Assembly);
-        public static readonly SemanticVersion Version = new SemanticVersion(SemanticVersionInfo.NuGetVersion);
+        public static readonly SemanticVersionInfo SemanticVersionInfo = new(Assembly);
+        public static readonly SemanticVersion Version = SemanticVersionInfo.SemanticVersion;
         public static readonly string[] EnvironmentInformation = EnvironmentHelper.SafelyGetEnvironmentInformation();
     }
 }
\ No newline at end of file
diff --git a/source/Octopus.Tentacle/Versioning/SemanticVersionInfo.cs b/source/Octopus.Tentacle/Versioning/SemanticVersionInfo.cs
index e7e7124a6..53ceb37c3 100644
--- a/source/Octopus.Tentacle/Versioning/SemanticVersionInfo.cs
+++ b/source/Octopus.Tentacle/Versioning/SemanticVersionInfo.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Reflection;
-using NuGet.Versioning;
+using Octopus.Versioning;
+using Octopus.Versioning.Semver;
 
 namespace Octopus.Tentacle.Versioning
 {
@@ -11,7 +12,7 @@ public class SemanticVersionInfo
     {
         public SemanticVersionInfo(Assembly assembly)
         {
-            SemanticVersion = SemanticVersion.Parse(assembly.GetInformationalVersion() ?? "0.0.0");
+            SemanticVersion = SemVerFactory.Parse(assembly.GetInformationalVersion() ?? "0.0.0");
             MajorMinorPatch = SemanticVersion.ToString("V", new VersionFormatter());
             BranchName = assembly.GetCustomAttribute<AssemblyGitBranchAttribute>()!.BranchName;
             NuGetVersion = assembly.GetCustomAttribute<AssemblyNuGetVersionAttribute>()!.NuGetVersion;