diff --git a/js/Announcer.ts b/js/Announcer.ts
index c5ee19a..1383a77 100644
--- a/js/Announcer.ts
+++ b/js/Announcer.ts
@@ -111,8 +111,6 @@ abstract class Announcer extends PhetioObject {
   }
 
   public static AnnouncerIO = new IOType( 'AnnouncerIO', {
-
-    // @ts-ignore https://github.com/phetsims/tandem/issues/261
     valueType: Announcer,
     documentation: 'Announces text to a specific browser technology (like aria-live or web speech)'
   } );
diff --git a/js/ResponsePacket.ts b/js/ResponsePacket.ts
index ee6bc41..f05a76a 100644
--- a/js/ResponsePacket.ts
+++ b/js/ResponsePacket.ts
@@ -183,8 +183,6 @@ class ResponsePacket {
 
   // Map VoicingResponse -> ResolvedResponse (resolve functions and Properties to their values)
   public static getResponseText( response: VoicingResponse ): ResolvedResponse {
-
-    // @ts-ignore This maps to ensuring we cover the TReadOnlyProperty case, but not in a type safe way, https://github.com/phetsims/scenery/issues/1442
     return response instanceof ReadOnlyProperty || response instanceof TinyProperty ? response.value :
            typeof response === 'function' ? response() : response;
   }
diff --git a/js/ResponsePatternCollection.ts b/js/ResponsePatternCollection.ts
index 87d868e..f565fdc 100644
--- a/js/ResponsePatternCollection.ts
+++ b/js/ResponsePatternCollection.ts
@@ -103,7 +103,7 @@ class ResponsePatternCollection {
     // TODO: Not sure how to get rid of this index signature error. I was looking at assertion signatures in links below, see https://github.com/phetsims/tambo/issues/160
     // https://stackoverflow.com/questions/56568423/typescript-no-index-signature-with-a-parameter-of-type-string-was-found-on-ty
     // https://www.carlrippon.com/typescript-assertion-signatures/
-    // @ts-ignore
+    // @ts-expect-error
     const patternString = this[ key ];
     assert && assert( patternString, `no pattern string found for key ${key}` );
     return patternString;
diff --git a/js/SpeechSynthesisParentPolyfill.ts b/js/SpeechSynthesisParentPolyfill.ts
index 1ebc078..c50d0de 100644
--- a/js/SpeechSynthesisParentPolyfill.ts
+++ b/js/SpeechSynthesisParentPolyfill.ts
@@ -25,13 +25,13 @@ const SpeechSynthesisParentPolyfill = {
 
     assert && assert( window.parent, 'This polyfill requires a parent frame implementation of SpeechSynthesis.' );
 
-    // @ts-ignore - Don't judge me TypeScript...
+    // @ts-expect-error - Don't judge me TypeScript...
     window.SpeechSynthesis = window.parent.SpeechSynthesis;
 
-    // @ts-ignore - Don't judge me TypeScript...
+    // @ts-expect-error - Don't judge me TypeScript...
     window.speechSynthesis = new window.parent.SpeechSynthesis();
 
-    // @ts-ignore - Don't judge me TypeScript...
+    // @ts-expect-error - Don't judge me TypeScript...
     window.SpeechSynthesisUtterance = window.parent.SpeechSynthesisUtterance;
   }
 };
diff --git a/js/Utterance.ts b/js/Utterance.ts
index 26ea5c3..0f6c31a 100644
--- a/js/Utterance.ts
+++ b/js/Utterance.ts
@@ -363,7 +363,7 @@ class Utterance extends Disposable implements FeatureSpecificAnnouncingControlPr
       alert = alertable.value;
     }
     else {
-      // @ts-ignore
+      // @ts-expect-error
       alert = alertable;
     }
     return alert;
diff --git a/js/UtteranceQueueTests.ts b/js/UtteranceQueueTests.ts
index 1cd40ca..a4cff13 100644
--- a/js/UtteranceQueueTests.ts
+++ b/js/UtteranceQueueTests.ts
@@ -26,7 +26,7 @@ const VOICING_UTTERANCE_INTERVAL = 125;
 // When we want to add a little time to make that an interval has completed.
 const TIMING_BUFFER = VOICING_UTTERANCE_INTERVAL + 50;
 
-// @ts-ignore we don't want to expose the constructor of this singleton just for unit tests.
+// @ts-expect-error we don't want to expose the constructor of this singleton just for unit tests.
 const testVoicingManager = new voicingManager.constructor();
 const testVoicingUtteranceQueue = new UtteranceQueue( testVoicingManager );
 
diff --git a/js/utterance-queue-main.ts b/js/utterance-queue-main.ts
index f6fe219..a971ed4 100644
--- a/js/utterance-queue-main.ts
+++ b/js/utterance-queue-main.ts
@@ -7,12 +7,12 @@ import utteranceQueue from './main.js'; // eslint-disable-line default-import-ma
 ( function() {
 
 
-  // @ts-ignore
+  // @ts-expect-error
   window.axon = axon;
 
-  // @ts-ignore
+  // @ts-expect-error
   window.phetCore = phetCore;
 
-  // @ts-ignore
+  // @ts-expect-error
   window.utteranceQueue = utteranceQueue;
 } );
\ No newline at end of file