diff --git a/src/TestExplorer/TestRunner.ts b/src/TestExplorer/TestRunner.ts
index 1e13e3486..d9fae8a14 100644
--- a/src/TestExplorer/TestRunner.ts
+++ b/src/TestExplorer/TestRunner.ts
@@ -729,7 +729,14 @@ export class TestRunner {
                 outputStream.write(replaced);
             });
 
+            // If the test run is iterrupted by a cancellation request from VS Code, ensure the task is terminated.
+            const cancellationDisposable = this.testRun.token.onCancellationRequested(() => {
+                task.execution.terminate("SIGINT");
+            });
+
             task.execution.onDidClose(code => {
+                cancellationDisposable.dispose();
+
                 // undefined or 0 are viewed as success
                 if (!code) {
                     resolve();
@@ -925,7 +932,6 @@ export class TestRunner {
                             return;
                         }
 
-                        // add cancelation
                         const startSession = vscode.debug.onDidStartDebugSession(session => {
                             if (config.testType === TestLibrary.xctest) {
                                 this.testRun.testRunStarted();
@@ -945,6 +951,7 @@ export class TestRunner {
                                 }
                             );
 
+                            // add cancellation
                             const cancellation = this.testRun.token.onCancellationRequested(() => {
                                 this.workspaceContext.outputChannel.logDiagnostic(
                                     "Test Debugging Cancelled",
diff --git a/src/tasks/SwiftExecution.ts b/src/tasks/SwiftExecution.ts
index d7b23e515..f9c6c5502 100644
--- a/src/tasks/SwiftExecution.ts
+++ b/src/tasks/SwiftExecution.ts
@@ -30,7 +30,7 @@ export class SwiftExecution extends vscode.CustomExecution {
         public readonly command: string,
         public readonly args: string[],
         public readonly options: SwiftExecutionOptions,
-        swiftProcess: SwiftProcess = new SwiftPtyProcess(command, args, options)
+        private readonly swiftProcess: SwiftProcess = new SwiftPtyProcess(command, args, options)
     ) {
         super(async () => {
             return new SwiftPseudoterminal(swiftProcess, options.presentation || {});
@@ -54,4 +54,11 @@ export class SwiftExecution extends vscode.CustomExecution {
      * @see {@link SwiftProcess.onDidClose}
      */
     onDidClose: vscode.Event<number | void>;
+
+    /**
+     * Terminate the underlying executable.
+     */
+    terminate(signal?: NodeJS.Signals) {
+        this.swiftProcess.terminate(signal);
+    }
 }