diff --git a/.github/workflows/build-debug.yml b/.github/workflows/build-debug.yml
index 6b2195d..2e47ace 100644
--- a/.github/workflows/build-debug.yml
+++ b/.github/workflows/build-debug.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: Cysharp/Actions/.github/actions/setup-dotnet@main
       - run: dotnet build -c Debug
       - run: dotnet test -c Debug --no-build
diff --git a/.github/workflows/build-release.yml b/.github/workflows/build-release.yml
index a38c949..c3dc213 100644
--- a/.github/workflows/build-release.yml
+++ b/.github/workflows/build-release.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: Cysharp/Actions/.github/actions/setup-dotnet@main
       # build and pack
       - run: dotnet build -c Release -p:Version=${{ inputs.tag }}
diff --git a/src/ObservableCollections/IObservableCollection.cs b/src/ObservableCollections/IObservableCollection.cs
index 3dc4156..474bb8e 100644
--- a/src/ObservableCollections/IObservableCollection.cs
+++ b/src/ObservableCollections/IObservableCollection.cs
@@ -1,4 +1,4 @@
-using ObservableCollections.Internal;
+using ObservableCollections.Internal;
 using System;
 using System.Collections;
 using System.Collections.Generic;
@@ -16,7 +16,12 @@ namespace ObservableCollections
         ISynchronizedView<T, TView> CreateView<TView>(Func<T, TView> transform, bool reverse = false);
     }
 
-    public interface IReadOnlyObservableDictionary<TKey, TValue> :
+    public interface IReadOnlyObservableList<T> :
+        IReadOnlyList<T>, IObservableCollection<T>
+    {
+    }
+
+    public interface IReadOnlyObservableDictionary<TKey, TValue> : 
         IReadOnlyDictionary<TKey, TValue>, IObservableCollection<KeyValuePair<TKey, TValue>>
     {
     }
diff --git a/src/ObservableCollections/ObservableList.Views.cs b/src/ObservableCollections/ObservableList.Views.cs
index 41efaab..03c56dd 100644
--- a/src/ObservableCollections/ObservableList.Views.cs
+++ b/src/ObservableCollections/ObservableList.Views.cs
@@ -7,7 +7,7 @@ using System.Linq;
 
 namespace ObservableCollections
 {
-    public sealed partial class ObservableList<T> : IList<T>, IReadOnlyList<T>, IObservableCollection<T>
+    public sealed partial class ObservableList<T> : IList<T>, IReadOnlyObservableList<T>
     {
         public ISynchronizedView<T, TView> CreateView<TView>(Func<T, TView> transform, bool reverse = false)
         {
diff --git a/src/ObservableCollections/ObservableList.cs b/src/ObservableCollections/ObservableList.cs
index 663356f..ff86ec0 100644
--- a/src/ObservableCollections/ObservableList.cs
+++ b/src/ObservableCollections/ObservableList.cs
@@ -7,7 +7,7 @@ using System.Runtime.InteropServices;
 
 namespace ObservableCollections
 {
-    public sealed partial class ObservableList<T> : IList<T>, IReadOnlyList<T>, IObservableCollection<T>
+    public sealed partial class ObservableList<T> : IList<T>, IReadOnlyObservableList<T>
     {
         readonly List<T> list;
         public object SyncRoot { get; } = new();