diff --git a/CHANGELOG.md b/CHANGELOG.md
index d3be40b..596e50f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,11 @@
 **Note**: Gaps between patch versions are faulty/broken releases.
 **Note**: A feature tagged as Experimental is in a high state of flux, you're at risk of it changing without notice.
 
+# 0.1.17
+
+- **New Feature**
+  - add `FunctorWithIndex` instance to `Zipper`, #65 (@giogonzo)
+
 # 0.1.16
 
 - **Polish**
diff --git a/docs/modules/Zipper.ts.md b/docs/modules/Zipper.ts.md
index e9b12eb..12ff89d 100644
--- a/docs/modules/Zipper.ts.md
+++ b/docs/modules/Zipper.ts.md
@@ -168,7 +168,7 @@ Added in v0.1.6
 **Signature**
 
 ```ts
-<A>(ma: Zipper<A>) => Zipper<Zipper<A>>
+<A>(wa: Zipper<A>) => Zipper<Zipper<A>>
 ```
 
 Added in v0.1.11
@@ -190,7 +190,7 @@ Added in v0.1.6
 **Signature**
 
 ```ts
-<A, B>(f: (fa: Zipper<A>) => B) => (ma: Zipper<A>) => Zipper<B>
+<A, B>(f: (wa: Zipper<A>) => B) => (wa: Zipper<A>) => Zipper<B>
 ```
 
 Added in v0.1.11
diff --git a/package.json b/package.json
index 599a6de..c2ff75c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "fp-ts-contrib",
-  "version": "0.1.16",
+  "version": "0.1.17",
   "description": "A community driven utility package for fp-ts",
   "files": [
     "lib",