diff --git a/package.json b/package.json
index d5fbfb2..e90220a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "oni-api",
-  "version": "0.0.36",
+  "version": "0.0.37",
   "description": "Oni's API layer",
   "main": "lib/index.js",
   "types": "lib/index.d.ts",
diff --git a/src/index.ts b/src/index.ts
index 6a9f7fb..c1cd705 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -103,6 +103,10 @@ export enum FileOpenMode {
 
     // Open file in a new tab, in the active editor
     NewTab,
+
+    // Open file in existing tab. Replaces the currently
+    // active file in the tab.
+    ExistingTab,
 }
 
 export interface FileOpenOptions {