diff --git a/src/run.ts b/src/run.ts
index 2b2c82a..a3be719 100644
--- a/src/run.ts
+++ b/src/run.ts
@@ -26,6 +26,8 @@ export async function pyRunApp(): Promise<void> {
     return;
   }
 
+  await saveActiveEditorFile();
+
   const python = await getSelectedPythonInterpreter();
   if (!python) {
     return;
@@ -103,6 +105,8 @@ export async function pyDebugApp(): Promise<void> {
     return;
   }
 
+  await saveActiveEditorFile();
+
   const python = await getSelectedPythonInterpreter();
   if (!python) {
     return;
@@ -137,6 +141,8 @@ export async function rRunApp(): Promise<void> {
     return;
   }
 
+  await saveActiveEditorFile();
+
   const path = isShinyAppRPart(pathFile) ? path_dirname(pathFile) : pathFile;
 
   const port = await getAppPort("run", "r");
@@ -332,6 +338,12 @@ function getActiveEditorFile(): string | undefined {
   return appPath;
 }
 
+async function saveActiveEditorFile(): Promise<void> {
+  if (vscode.window.activeTextEditor?.document.isDirty) {
+    await vscode.window.activeTextEditor?.document.save();
+  }
+}
+
 function getExtensionPath(): string | undefined {
   const extensionPath =
     vscode.extensions.getExtension("Posit.shiny")?.extensionPath;