diff --git a/CHANGELOG.md b/CHANGELOG.md
index 99538bb19..dc2d69c17 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,12 @@
 **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.
 
+# 1.0.0
+
+* **Breaking Change**
+  * upgrade to `fp-ts@1.0.0`
+  * see https://github.com/gcanti/io-ts/pull/112 (@gcanti)
+
 # 0.9.8
 
 * **New Feature**
diff --git a/package-lock.json b/package-lock.json
index 818582937..353d88b21 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "io-ts",
-  "version": "0.9.7",
+  "version": "1.0.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -434,9 +434,9 @@
       }
     },
     "fp-ts": {
-      "version": "0.6.8",
-      "resolved": "https://registry.npmjs.org/fp-ts/-/fp-ts-0.6.8.tgz",
-      "integrity": "sha512-T//qYN1EcKrFiyp9MjkElsNzTf40E7tLen7bYKIVWTFhpV7TeH2xPEETm+JidhWMCgbUbmzU6FvAdTqZmIKGGg=="
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/fp-ts/-/fp-ts-1.0.0.tgz",
+      "integrity": "sha512-eXq3sOoJNS4aQJFSi8LWoz9TSLAdm9+TZqnj1aA55AC4fSltlGeOorJ3zQiQWcWFea3DdTXSEoUuAp97ObCI2Q=="
     },
     "fs.realpath": {
       "version": "1.0.0",
diff --git a/package.json b/package.json
index af2f46ed1..7d3d272c1 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
   },
   "homepage": "https://github.com/gcanti/io-ts",
   "dependencies": {
-    "fp-ts": "^0.6.4"
+    "fp-ts": "^1.0.0"
   },
   "devDependencies": {
     "@types/benchmark": "1.0.31",