diff --git a/.gitignore b/.gitignore
index f345cd1..f651948 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,8 @@ dist
 node_modules
 npm-debug.log*
 package-lock.json
+/docs
+/spec
 
 # Editors
 .idea
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 33b23fe..b27df52 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.1.1
+
+* No user-visible changes.
+
 ## 1.1.0
 
 * Add `SyncMessagePort.receiveMessageIfAvailable()`.
diff --git a/package.json b/package.json
index 6d73fa3..c5b4eca 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sync-message-port",
-  "version": "1.1.0",
+  "version": "1.1.1",
   "description": "A Node.js communication port that can pass messages synchronously between workers",
   "repository": "sass/sync-message-port",
   "author": "Google Inc.",
@@ -23,6 +23,7 @@
     "check:tsc": "tsc --noEmit",
     "clean": "gts clean",
     "compile": "tsc -p tsconfig.build.json",
+    "doc": "typedoc lib/index.ts",
     "fix": "gts fix",
     "test": "jest"
   },
@@ -35,6 +36,7 @@
     "npm-run-all": "^4.1.5",
     "ts-jest": "^29.0.5",
     "ts-node": "^10.2.1",
+    "typedoc": "^0.26.11",
     "typescript": "^5.0.2"
   }
 }