diff --git a/Content.Client/Actions/ActionsSystem.cs b/Content.Client/Actions/ActionsSystem.cs
index 4074e05cf6..de67ffa87c 100644
--- a/Content.Client/Actions/ActionsSystem.cs
+++ b/Content.Client/Actions/ActionsSystem.cs
@@ -295,7 +295,7 @@ namespace Content.Client.Actions
                 if (!map.TryGet("action", out var actionNode))
                     continue;
 
-                var action = _serialization.Read<ActionType>(actionNode);
+                var action = _serialization.Read<ActionType>(actionNode, notNullableOverride: true);
 
                 if (PlayerActions.Actions.TryGetValue(action, out var existingAction))
                 {
@@ -310,7 +310,7 @@ namespace Content.Client.Actions
                 if (!map.TryGet("assignments", out var assignmentNode))
                     continue;
 
-                var nodeAssignments = _serialization.Read<List<(byte Hotbar, byte Slot)>>(assignmentNode);
+                var nodeAssignments = _serialization.Read<List<(byte Hotbar, byte Slot)>>(assignmentNode, notNullableOverride: true);
 
                 foreach (var index in nodeAssignments)
                 {
diff --git a/Content.Client/Changelog/ChangelogManager.cs b/Content.Client/Changelog/ChangelogManager.cs
index 9652622fa3..59fb7dc182 100644
--- a/Content.Client/Changelog/ChangelogManager.cs
+++ b/Content.Client/Changelog/ChangelogManager.cs
@@ -81,7 +81,7 @@ namespace Content.Client.Changelog
                     return new List<ChangelogEntry>();
 
                 var node = (MappingDataNode)yamlData.Documents[0].RootNode.ToDataNode();
-                return _serialization.Read<List<ChangelogEntry>>(node["Entries"]);
+                return _serialization.Read<List<ChangelogEntry>>(node["Entries"], notNullableOverride: true);
             });
         }
 
diff --git a/Content.Shared/Damage/DamageSpecifierDictionarySerializer.cs b/Content.Shared/Damage/DamageSpecifierDictionarySerializer.cs
index 48e6f174ee..b7dc0ff79a 100644
--- a/Content.Shared/Damage/DamageSpecifierDictionarySerializer.cs
+++ b/Content.Shared/Damage/DamageSpecifierDictionarySerializer.cs
@@ -40,7 +40,7 @@ public sealed class DamageSpecifierDictionarySerializer : ITypeReader<Dictionary
         // Add all the damage types by just copying the type dictionary (if it is not null).
         if (node.TryGet("types", out var typesNode))
         {
-            serializationManager.Read(typesNode, instanceProvider: () => dict);
+            serializationManager.Read(typesNode, instanceProvider: () => dict, notNullableOverride: true);
         }
 
         if (!node.TryGet("groups", out var groupsNode))
@@ -48,7 +48,7 @@ public sealed class DamageSpecifierDictionarySerializer : ITypeReader<Dictionary
 
         // Then resolve damage groups and add them
         var prototypeManager = dependencies.Resolve<IPrototypeManager>();
-        foreach (var entry in serializationManager.Read<Dictionary<string, FixedPoint2>>(groupsNode))
+        foreach (var entry in serializationManager.Read<Dictionary<string, FixedPoint2>>(groupsNode, notNullableOverride: true))
         {
             if (!prototypeManager.TryIndex<DamageGroupPrototype>(entry.Key, out var group))
             {
diff --git a/Content.Shared/Decals/DecalGridChunkCollectionTypeSerializer.cs b/Content.Shared/Decals/DecalGridChunkCollectionTypeSerializer.cs
index 5c072af036..1bbcd03a1c 100644
--- a/Content.Shared/Decals/DecalGridChunkCollectionTypeSerializer.cs
+++ b/Content.Shared/Decals/DecalGridChunkCollectionTypeSerializer.cs
@@ -20,7 +20,7 @@ namespace Content.Shared.Decals
             IDependencyCollection dependencies, bool skipHook, ISerializationContext? context = null,
             ISerializationManager.InstantiationDelegate<DecalGridComponent.DecalGridChunkCollection>? _ = default)
         {
-            var dictionary = serializationManager.Read<Dictionary<Vector2i, Dictionary<uint, Decal>>>(node, context, skipHook);
+            var dictionary = serializationManager.Read<Dictionary<Vector2i, Dictionary<uint, Decal>>>(node, context, skipHook, notNullableOverride: true);
 
             var uids = new SortedSet<uint>();
             var uidChunkMap = new Dictionary<uint, Vector2i>();