diff --git a/packages/grpc-js/src/backoff-timeout.ts b/packages/grpc-js/src/backoff-timeout.ts
index f523e259..3ffd2606 100644
--- a/packages/grpc-js/src/backoff-timeout.ts
+++ b/packages/grpc-js/src/backoff-timeout.ts
@@ -63,7 +63,7 @@ export class BackoffTimeout {
    * to an object representing a timer that has ended, but it can still be
    * interacted with without error.
    */
-  private timerId: NodeJS.Timer;
+  private timerId: NodeJS.Timeout;
   /**
    * Indicates whether the timer is currently running.
    */
diff --git a/packages/grpc-js/src/internal-channel.ts b/packages/grpc-js/src/internal-channel.ts
index 3d262489..38646a0c 100644
--- a/packages/grpc-js/src/internal-channel.ts
+++ b/packages/grpc-js/src/internal-channel.ts
@@ -131,7 +131,7 @@ export class InternalChannel {
    * the invariant is that callRefTimer is reffed if and only if pickQueue
    * is non-empty.
    */
-  private callRefTimer: NodeJS.Timer;
+  private callRefTimer: NodeJS.Timeout;
   private configSelector: ConfigSelector | null = null;
   /**
    * This is the error from the name resolver if it failed most recently. It
diff --git a/packages/grpc-js/src/load-balancer-outlier-detection.ts b/packages/grpc-js/src/load-balancer-outlier-detection.ts
index 7297000d..2cba9d14 100644
--- a/packages/grpc-js/src/load-balancer-outlier-detection.ts
+++ b/packages/grpc-js/src/load-balancer-outlier-detection.ts
@@ -367,7 +367,7 @@ export class OutlierDetectionLoadBalancer implements LoadBalancer {
   private childBalancer: ChildLoadBalancerHandler;
   private addressMap: Map<string, MapEntry> = new Map<string, MapEntry>();
   private latestConfig: OutlierDetectionLoadBalancingConfig | null = null;
-  private ejectionTimer: NodeJS.Timer;
+  private ejectionTimer: NodeJS.Timeout;
   private timerStartTime: Date | null = null;
 
   constructor(channelControlHelper: ChannelControlHelper) {
diff --git a/packages/grpc-js/src/resolver-dns.ts b/packages/grpc-js/src/resolver-dns.ts
index b20b7a54..775a25c3 100644
--- a/packages/grpc-js/src/resolver-dns.ts
+++ b/packages/grpc-js/src/resolver-dns.ts
@@ -96,7 +96,7 @@ class DnsResolver implements Resolver {
   private defaultResolutionError: StatusObject;
   private backoff: BackoffTimeout;
   private continueResolving = false;
-  private nextResolutionTimer: NodeJS.Timer;
+  private nextResolutionTimer: NodeJS.Timeout;
   private isNextResolutionTimerRunning = false;
   private isServiceConfigEnabled = true;
   constructor(
diff --git a/packages/grpc-js/src/resolving-call.ts b/packages/grpc-js/src/resolving-call.ts
index 683fed5b..5dbe83cd 100644
--- a/packages/grpc-js/src/resolving-call.ts
+++ b/packages/grpc-js/src/resolving-call.ts
@@ -41,7 +41,7 @@ export class ResolvingCall implements Call {
   private deadline: Deadline;
   private host: string;
   private statusWatchers: ((status: StatusObject) => void)[] = [];
-  private deadlineTimer: NodeJS.Timer = setTimeout(() => {}, 0);
+  private deadlineTimer: NodeJS.Timeout = setTimeout(() => {}, 0);
   private filterStack: FilterStack | null = null;
 
   constructor(
diff --git a/packages/grpc-js/src/retrying-call.ts b/packages/grpc-js/src/retrying-call.ts
index 5ae585b9..bf15c914 100644
--- a/packages/grpc-js/src/retrying-call.ts
+++ b/packages/grpc-js/src/retrying-call.ts
@@ -169,7 +169,7 @@ export class RetryingCall implements Call {
    * Number of attempts so far
    */
   private attempts: number = 0;
-  private hedgingTimer: NodeJS.Timer | null = null;
+  private hedgingTimer: NodeJS.Timeout | null = null;
   private committedCallIndex: number | null = null;
   private initialRetryBackoffSec = 0;
   private nextRetryBackoffSec = 0;
@@ -625,7 +625,7 @@ export class RetryingCall implements Call {
         return;
       }
       const call = this.underlyingCalls[this.committedCallIndex];
-      bufferEntry.callback = context.callback; 
+      bufferEntry.callback = context.callback;
       if (call.state === 'ACTIVE' && call.nextMessageToSend === messageIndex) {
         call.call.sendMessageWithContext({
           callback: (error) => {
@@ -668,4 +668,4 @@ export class RetryingCall implements Call {
   getHost(): string {
     return this.host;
   }
-}
\ No newline at end of file
+}
diff --git a/packages/grpc-js/src/server-call.ts b/packages/grpc-js/src/server-call.ts
index ff0a1033..be807b95 100644
--- a/packages/grpc-js/src/server-call.ts
+++ b/packages/grpc-js/src/server-call.ts
@@ -407,7 +407,7 @@ export class Http2ServerCallStream<
   ResponseType
 > extends EventEmitter {
   cancelled = false;
-  deadlineTimer: NodeJS.Timer | null = null;
+  deadlineTimer: NodeJS.Timeout | null = null;
   private statusSent = false;
   private deadline: Deadline = Infinity;
   private wantTrailers = false;
diff --git a/packages/grpc-js/src/server.ts b/packages/grpc-js/src/server.ts
index 9853ddf5..1b481bbf 100644
--- a/packages/grpc-js/src/server.ts
+++ b/packages/grpc-js/src/server.ts
@@ -971,8 +971,8 @@ export class Server {
         this.channelzTrace.addTrace('CT_INFO', 'Connection established by client ' + clientAddress);
         this.sessionChildrenTracker.refChild(channelzRef);
       }
-      let connectionAgeTimer: NodeJS.Timer | null = null;
-      let connectionAgeGraceTimer: NodeJS.Timer | null = null;
+      let connectionAgeTimer: NodeJS.Timeout | null = null;
+      let connectionAgeGraceTimer: NodeJS.Timeout | null = null;
       let sessionClosedByServer = false;
       if (this.maxConnectionAgeMs !== UNLIMITED_CONNECTION_AGE_MS) {
         // Apply a random jitter within a +/-10% range
@@ -1000,7 +1000,7 @@ export class Server {
           }
         }, this.maxConnectionAgeMs + jitter).unref?.();
       }
-      const keeapliveTimeTimer: NodeJS.Timer | null = setInterval(() => {
+      const keeapliveTimeTimer: NodeJS.Timeout | null = setInterval(() => {
         const timeoutTImer = setTimeout(() => {
           sessionClosedByServer = true;
           if (this.channelzEnabled) {
diff --git a/packages/grpc-js/src/subchannel-pool.ts b/packages/grpc-js/src/subchannel-pool.ts
index bbfbea02..f9400bed 100644
--- a/packages/grpc-js/src/subchannel-pool.ts
+++ b/packages/grpc-js/src/subchannel-pool.ts
@@ -45,7 +45,7 @@ export class SubchannelPool {
   /**
    * A timer of a task performing a periodic subchannel cleanup.
    */
-  private cleanupTimer: NodeJS.Timer | null = null;
+  private cleanupTimer: NodeJS.Timeout | null = null;
 
   /**
    * A pool of subchannels use for making connections. Subchannels with the
diff --git a/packages/grpc-js/src/transport.ts b/packages/grpc-js/src/transport.ts
index 4f26e96e..a9da5db4 100644
--- a/packages/grpc-js/src/transport.ts
+++ b/packages/grpc-js/src/transport.ts
@@ -81,7 +81,7 @@ class Http2Transport implements Transport {
   /**
    * Timer reference for timeout that indicates when to send the next ping
    */
-  private keepaliveTimerId: NodeJS.Timer | null = null;
+  private keepaliveTimerId: NodeJS.Timeout | null = null;
   /**
    * Indicates that the keepalive timer ran out while there were no active
    * calls, and a ping should be sent the next time a call starts.
@@ -90,7 +90,7 @@ class Http2Transport implements Transport {
   /**
    * Timer reference tracking when the most recent ping will be considered lost
    */
-  private keepaliveTimeoutId: NodeJS.Timer | null = null;
+  private keepaliveTimeoutId: NodeJS.Timeout | null = null;
   /**
    * Indicates whether keepalive pings should be sent without any active calls
    */