diff --git a/tabby-serial/src/components/serialTab.component.ts b/tabby-serial/src/components/serialTab.component.ts
index d1042fe1..acac9b4a 100644
--- a/tabby-serial/src/components/serialTab.component.ts
+++ b/tabby-serial/src/components/serialTab.component.ts
@@ -86,7 +86,7 @@ export class SerialTabComponent extends ConnectableTerminalTabComponent<SerialPr
         super.attachSessionHandlers()
     }
 
-    protected onSessionDestroyed() {
+    protected onSessionDestroyed (): void {
         if (this.frontend) {
             // Session was closed abruptly
             this.write('\r\n' + colors.black.bgWhite(' SERIAL ') + ` session closed\r\n`)
diff --git a/tabby-ssh/src/components/sshTab.component.ts b/tabby-ssh/src/components/sshTab.component.ts
index dcd7c8cd..1555cb15 100644
--- a/tabby-ssh/src/components/sshTab.component.ts
+++ b/tabby-ssh/src/components/sshTab.component.ts
@@ -148,7 +148,7 @@ export class SSHTabComponent extends ConnectableTerminalTabComponent<SSHProfile>
         return session
     }
 
-    protected onSessionDestroyed() {
+    protected onSessionDestroyed (): void {
         if (this.frontend) {
             // Session was closed abruptly
             this.write('\r\n' + colors.black.bgWhite(' SSH ') + ` ${this.sshSession?.profile.options.host}: session closed\r\n`)
diff --git a/tabby-telnet/src/components/telnetTab.component.ts b/tabby-telnet/src/components/telnetTab.component.ts
index 767cea97..e1af86ff 100644
--- a/tabby-telnet/src/components/telnetTab.component.ts
+++ b/tabby-telnet/src/components/telnetTab.component.ts
@@ -42,7 +42,7 @@ export class TelnetTabComponent extends ConnectableTerminalTabComponent<TelnetPr
         super.onFrontendReady()
     }
 
-    protected onSessionDestroyed() {
+    protected onSessionDestroyed (): void {
         if (this.frontend) {
             // Session was closed abruptly
             this.write('\r\n' + colors.black.bgWhite(' TELNET ') + ` ${this.session?.profile.options.host}: session closed\r\n`)
diff --git a/tabby-terminal/src/api/baseTerminalTab.component.ts b/tabby-terminal/src/api/baseTerminalTab.component.ts
index 1a0cfd74..107c617c 100644
--- a/tabby-terminal/src/api/baseTerminalTab.component.ts
+++ b/tabby-terminal/src/api/baseTerminalTab.component.ts
@@ -784,7 +784,7 @@ export class BaseTerminalTabComponent<P extends BaseTerminalProfile> extends Bas
         })
 
         this.attachSessionHandler(this.session.destroyed$, () => {
-            this.onSessionDestroyed()            
+            this.onSessionDestroyed()
         })
 
         this.attachSessionHandler(this.session.oscProcessor.copyRequested$, content => {
@@ -796,7 +796,7 @@ export class BaseTerminalTabComponent<P extends BaseTerminalProfile> extends Bas
     /**
      * Method called when session is destroyed. Set the session to null
      */
-    protected onSessionDestroyed() {
+    protected onSessionDestroyed (): void {
         this.setSession(null)
     }
 
diff --git a/tabby-terminal/src/api/connectableTerminalTab.component.ts b/tabby-terminal/src/api/connectableTerminalTab.component.ts
index 7309929e..eef9ccd4 100644
--- a/tabby-terminal/src/api/connectableTerminalTab.component.ts
+++ b/tabby-terminal/src/api/connectableTerminalTab.component.ts
@@ -26,7 +26,7 @@ export abstract class ConnectableTerminalTabComponent<P extends BaseTerminalProf
     }
 
     /**
-    * Initialize Connectable Session. 
+    * Initialize Connectable Session.
     * Set reconnectOffered to false
     */
     async initializeSession (): Promise<void> {
@@ -36,7 +36,7 @@ export abstract class ConnectableTerminalTabComponent<P extends BaseTerminalProf
     /**
     * Method called when session is destroyed. Handle the tab behavior on session end for connectable tab
     */
-    protected onSessionDestroyed() {
+    protected onSessionDestroyed (): void {
         super.onSessionDestroyed()
 
         if (this.frontend) {
@@ -47,12 +47,12 @@ export abstract class ConnectableTerminalTabComponent<P extends BaseTerminalProf
             }
         }
     }
-    
+
     /**
     * Offering reconnection to the user if it hasn't been done yet.
     * Set reconnectOffered to true
     */
-    offerReconnection () {
+    offerReconnection (): void {
         if (!this.reconnectOffered) {
             this.reconnectOffered = true
             this.write(this.translate.instant(_('Press any key to reconnect')) + '\r\n')