diff --git a/Elsa.sln b/Elsa.sln
index 0cccd0d7a..a0950aa3f 100644
--- a/Elsa.sln
+++ b/Elsa.sln
@@ -292,6 +292,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "pipelines", "pipelines", "{
 		.github\workflows\packages.yml = .github\workflows\packages.yml
 		build.sh = build.sh
 		.github\workflows\bounty.yml = .github\workflows\bounty.yml
+		.github\workflows\pr.yml = .github\workflows\pr.yml
 	EndProjectSection
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "_build", "build\_build.csproj", "{99F2B1DA-2F69-4D70-A2A3-AC985AD91EC4}"
diff --git a/src/modules/Elsa.Workflows.Core/Models/ActivityDescriptor.cs b/src/modules/Elsa.Workflows.Core/Models/ActivityDescriptor.cs
index cd09df6bd..f243c29bf 100644
--- a/src/modules/Elsa.Workflows.Core/Models/ActivityDescriptor.cs
+++ b/src/modules/Elsa.Workflows.Core/Models/ActivityDescriptor.cs
@@ -65,7 +65,7 @@ public class ActivityDescriptor
     /// Instantiates a concrete instance of an <see cref="IActivity"/>.
     /// </summary>
     [JsonIgnore]
-    public Func<ActivityConstructorContext, IActivity> Constructor { get; init; } = default!;
+    public Func<ActivityConstructorContext, IActivity> Constructor { get; set; } = default!;
 
     /// <summary>
     /// The kind of activity.
@@ -75,7 +75,7 @@ public class ActivityDescriptor
     /// <summary>
     /// The ports of the activity type.
     /// </summary>
-    public ICollection<Port> Ports { get; init; } = new List<Port>();
+    public ICollection<Port> Ports { get; set; } = new List<Port>();
     
     /// <summary>
     /// The custom properties of the activity type.