diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2dacba0..7586593 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## v2.3.1
+
+- Fix type errors when including `dom.iterable` lib to the project (https://github.com/uhyo/better-typescript-lib/issues/30)
+
 ## v2.3.0
 
 This version newly includes improvements for DOM types (`fetch`). Thank you @aaditmshah!
diff --git a/docs/diff/dom.generated.d.ts.md b/docs/diff/dom.generated.d.ts.md
index 915ee96..9ac44a7 100644
--- a/docs/diff/dom.generated.d.ts.md
+++ b/docs/diff/dom.generated.d.ts.md
@@ -5,7 +5,27 @@ Index: dom.generated.d.ts
 ===================================================================
 --- dom.generated.d.ts
 +++ dom.generated.d.ts
-@@ -2821,9 +2821,9 @@
+@@ -2515,11 +2515,16 @@
+   new (): AudioParam;
+ };
+ 
+ interface AudioParamMap {
+-  forEach(
+-    callbackfn: (value: AudioParam, key: string, parent: AudioParamMap) => void,
+-    thisArg?: any
++  forEach<This = undefined>(
++    callbackfn: (
++      this: This,
++      value: AudioParam,
++      key: string,
++      parent: this
++    ) => void,
++    thisArg?: This
+   ): void;
+ }
+ 
+ declare var AudioParamMap: {
+@@ -2821,9 +2826,9 @@
    readonly bodyUsed: boolean;
    arrayBuffer(): Promise<ArrayBuffer>;
    blob(): Promise<Blob>;
@@ -16,5 +36,95 @@ Index: dom.generated.d.ts
  }
  
  interface BroadcastChannelEventMap {
+@@ -5948,11 +5953,11 @@
+   readonly BUBBLING_PHASE: 3;
+ };
+ 
+ interface EventCounts {
+-  forEach(
+-    callbackfn: (value: number, key: string, parent: EventCounts) => void,
+-    thisArg?: any
++  forEach<This = undefined>(
++    callbackfn: (this: This, value: number, key: string, parent: this) => void,
++    thisArg?: This
+   ): void;
+ }
+ 
+ declare var EventCounts: {
+@@ -6328,11 +6333,16 @@
+   readonly ready: Promise<FontFaceSet>;
+   readonly status: FontFaceSetLoadStatus;
+   check(font: string, text?: string): boolean;
+   load(font: string, text?: string): Promise<FontFace[]>;
+-  forEach(
+-    callbackfn: (value: FontFace, key: FontFace, parent: FontFaceSet) => void,
+-    thisArg?: any
++  forEach<This = undefined>(
++    callbackfn: (
++      this: This,
++      value: FontFace,
++      key: FontFace,
++      parent: this
++    ) => void,
++    thisArg?: This
+   ): void;
+   addEventListener<K extends keyof FontFaceSetEventMap>(
+     type: K,
+     listener: (this: FontFaceSet, ev: FontFaceSetEventMap[K]) => any,
+@@ -11689,11 +11699,16 @@
+ };
+ 
+ /** Available only in secure contexts. */
+ interface MIDIInputMap {
+-  forEach(
+-    callbackfn: (value: MIDIInput, key: string, parent: MIDIInputMap) => void,
+-    thisArg?: any
++  forEach<This = undefined>(
++    callbackfn: (
++      this: This,
++      value: MIDIInput,
++      key: string,
++      parent: this
++    ) => void,
++    thisArg?: This
+   ): void;
+ }
+ 
+ declare var MIDIInputMap: {
+@@ -11742,11 +11757,16 @@
+ };
+ 
+ /** Available only in secure contexts. */
+ interface MIDIOutputMap {
+-  forEach(
+-    callbackfn: (value: MIDIOutput, key: string, parent: MIDIOutputMap) => void,
+-    thisArg?: any
++  forEach<This = undefined>(
++    callbackfn: (
++      this: This,
++      value: MIDIOutput,
++      key: string,
++      parent: this
++    ) => void,
++    thisArg?: This
+   ): void;
+ }
+ 
+ declare var MIDIOutputMap: {
+@@ -14680,11 +14700,11 @@
+   new (descriptionInitDict: RTCSessionDescriptionInit): RTCSessionDescription;
+ };
+ 
+ interface RTCStatsReport {
+-  forEach(
+-    callbackfn: (value: any, key: string, parent: RTCStatsReport) => void,
+-    thisArg?: any
++  forEach<This = undefined>(
++    callbackfn: (this: This, value: unknown, key: string, parent: this) => void,
++    thisArg?: This
+   ): void;
+ }
+ 
+ declare var RTCStatsReport: {
 
 ```
diff --git a/package.json b/package.json
index 13eafb4..c8beafd 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "better-typescript-lib",
   "private": true,
-  "version": "2.3.0",
+  "version": "2.3.1",
   "description": "Better TypeScript standard library",
   "main": "index.js",
   "devDependencies": {