diff --git a/src/NzbDrone.Api/Calendar/CalendarFeedModule.cs b/src/NzbDrone.Api/Calendar/CalendarFeedModule.cs
index 9a2bfec9b..e9b65a2be 100644
--- a/src/NzbDrone.Api/Calendar/CalendarFeedModule.cs
+++ b/src/NzbDrone.Api/Calendar/CalendarFeedModule.cs
@@ -3,11 +3,9 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using Ical.Net;
+using Ical.Net.CalendarComponents;
 using Ical.Net.DataTypes;
-using Ical.Net.General;
-using Ical.Net.Interfaces.Serialization;
 using Ical.Net.Serialization;
-using Ical.Net.Serialization.iCalendar.Factory;
 using NzbDrone.Core.Movies;
 using Nancy.Responses;
 using NzbDrone.Core.Tags;
@@ -117,7 +115,7 @@ namespace NzbDrone.Api.Calendar
                 return;
             }
             
-            var occurrence = calendar.Create<Event>();
+            var occurrence = calendar.Create<CalendarEvent>();
             occurrence.Uid = "NzbDrone_movie_" + movie.Id + (cinemasRelease ? "_cinemas" : "_physical");
             occurrence.Status = movie.Status == MovieStatusType.Announced ? EventStatus.Tentative : EventStatus.Confirmed;
             
diff --git a/src/NzbDrone.Api/Radarr.Api.csproj b/src/NzbDrone.Api/Radarr.Api.csproj
index 2b54823ae..09fa5acad 100644
--- a/src/NzbDrone.Api/Radarr.Api.csproj
+++ b/src/NzbDrone.Api/Radarr.Api.csproj
@@ -4,7 +4,7 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="FluentValidation" Version="8.4.0" />
-    <PackageReference Include="Ical.Net" Version="2.2.32" />
+    <PackageReference Include="Ical.Net" Version="4.1.11" />
     <PackageReference Include="Nancy" Version="2.0.0" />
     <PackageReference Include="Nancy.Authentication.Basic" Version="2.0.0" />
     <PackageReference Include="Nancy.Authentication.Forms" Version="2.0.0" />
diff --git a/src/Radarr.Api.V2/Calendar/CalendarFeedModule.cs b/src/Radarr.Api.V2/Calendar/CalendarFeedModule.cs
index 30ac460cc..d3acabe31 100644
--- a/src/Radarr.Api.V2/Calendar/CalendarFeedModule.cs
+++ b/src/Radarr.Api.V2/Calendar/CalendarFeedModule.cs
@@ -3,11 +3,9 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using Ical.Net;
+using Ical.Net.CalendarComponents;
 using Ical.Net.DataTypes;
-using Ical.Net.General;
-using Ical.Net.Interfaces.Serialization;
 using Ical.Net.Serialization;
-using Ical.Net.Serialization.iCalendar.Factory;
 using NzbDrone.Core.Movies;
 using Nancy.Responses;
 using NzbDrone.Core.Tags;
@@ -108,7 +106,7 @@ namespace Radarr.Api.V2.Calendar
                 return;
             }
 
-            var occurrence = calendar.Create<Event>();
+            var occurrence = calendar.Create<CalendarEvent>();
             occurrence.Uid = "Radarr_movie_" + movie.Id + (cinemasRelease ? "_cinemas" : "_physical");
             occurrence.Status = movie.Status == MovieStatusType.Announced ? EventStatus.Tentative : EventStatus.Confirmed;
 
diff --git a/src/Radarr.Api.V2/Radarr.Api.V2.csproj b/src/Radarr.Api.V2/Radarr.Api.V2.csproj
index 6bb64a9d3..6d587e5ba 100644
--- a/src/Radarr.Api.V2/Radarr.Api.V2.csproj
+++ b/src/Radarr.Api.V2/Radarr.Api.V2.csproj
@@ -4,7 +4,7 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="FluentValidation" Version="8.4.0" />
-    <PackageReference Include="Ical.Net" Version="2.2.32" />
+    <PackageReference Include="Ical.Net" Version="4.1.11" />
     <PackageReference Include="Nancy" Version="2.0.0" />
     <PackageReference Include="Nancy.Authentication.Basic" Version="2.0.0" />
     <PackageReference Include="Nancy.Authentication.Forms" Version="2.0.0" />