diff --git a/README.md b/README.md
index a5a2705d..4d60a6bb 100644
--- a/README.md
+++ b/README.md
@@ -54,6 +54,9 @@ String or Null, default `'PT0S'`.
Value to be used when the duration is 0. Since [the specification](https://en.wikipedia.org/wiki/ISO_8601#Durations) says that `'PT0S'` or `'P0D'` are both valid, you are allowed to change this value. You can also pass just `null`.
+#### showNegative
+Boolean, default `false`. Sets up the option for negative and positive durations.
+
#### showButtons
Boolean, default `true`. Shows the up and down buttons.
diff --git a/package-lock.json b/package-lock.json
index 6dee1062..bfe6ea22 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
{
"name": "ngx-duration-picker",
- "version": "1.2.1",
+ "version": "1.3.0",
"lockfileVersion": 1,
"requires": true,
"dependencies": {
diff --git a/src/app/app.component.html b/src/app/app.component.html
index 8e015113..e0432c8b 100644
--- a/src/app/app.component.html
+++ b/src/app/app.component.html
@@ -50,6 +50,30 @@
+
+