diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 1940973a..11cf7be5 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -4,6 +4,8 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
+      - name: Update
+        run: sudo apt-get update
       - name: Install ImageMagick
         run: sudo apt-get -y install graphicsmagick
       - name: checkout
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a95090d0..7137db26 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 2.37.2
+### Bugfix
+* fix for TypeScript from [Antoine](https://github.com/antoineol) ([#896](https://github.com/jcubic/jquery.terminal/pull/896)) and [KiddoV](https://github.com/KiddoV) ([#901](https://github.com/jcubic/jquery.terminal/pull/901))
+
 ## 2.37.1
 ### Bugfix
 * fix wrong calculation of characters with custom font [#892](https://github.com/jcubic/jquery.terminal/issues/892)
diff --git a/js/jquery.terminal.d.ts b/js/jquery.terminal.d.ts
index 12a598f7..59da89b1 100644
--- a/js/jquery.terminal.d.ts
+++ b/js/jquery.terminal.d.ts
@@ -22,7 +22,7 @@ type TypeOrPromise<T> = T | PromiseLike<T>;
 
 declare namespace JQueryTerminal {
     type interpreterFunction = (this: JQueryTerminal, command: string, term: JQueryTerminal) => any;
-    type terminalObjectFunction = (...args: (string | number | RegExp)[]) => (void | TypeOrPromise<simpleEchoValue>);
+    type terminalObjectFunction = (this: JQueryTerminal, ...args: (string | number | RegExp)[]) => (void | TypeOrPromise<simpleEchoValue>);
     type Interpreter = string | interpreterFunction | ObjectInterpreter;
     type ObjectInterpreter = {
         [key: string]: ObjectInterpreter | terminalObjectFunction;
@@ -828,3 +828,8 @@ interface JQueryTerminal<TElement = HTMLElement> extends JQuery<TElement> {
     scroll_to_bottom(): JQueryTerminal;
     is_bottom(): boolean;
 }
+
+declare module 'jquery.terminal' {
+    const JQTerminal: (window: Window, JQuery: JQueryStatic) => void;
+    export default JQTerminal;
+}
\ No newline at end of file
diff --git a/test.ts b/test.ts
index a19633c3..17f4bac9 100644
--- a/test.ts
+++ b/test.ts
@@ -47,6 +47,11 @@ $('.term').terminal([obj_interpreter]);
 $('.term').terminal(["foo.php", obj_interpreter]);
 $('.term').terminal(["foo.php", obj_interpreter, function(command) {
 }]);
+$('.term').terminal({
+    help: function () {
+        this.echo('Help command');
+    }
+});
 
 class Foo {
     x: string;
diff --git a/tsconfig.json b/tsconfig.json
index dba22364..896e8dac 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -2,7 +2,8 @@
     "compilerOptions": {
         "target": "es6",
         "module": "commonjs",
-        "lib": ["es2015", "ES2018.Promise", "dom"]
+        "lib": ["es2015", "ES2018.Promise", "dom"],
+        "noImplicitThis": true
     },
     "exclude": ["npm"]
 }