diff --git a/CHANGELOG.md b/CHANGELOG.md
index 889ac95d..f3f30a9d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 0.39.1
+
+* Fixing `Heap` type declarations (@em-ctc).
+
 ## 0.39.0
 
 * Adding `LRUCacheWithDelete` & `LRUMapWithDelete` (@trivikr & @mrflip).
diff --git a/package-lock.json b/package-lock.json
index 9e422ce8..19d8b393 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "mnemonist",
-  "version": "0.39.0",
+  "version": "0.39.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "mnemonist",
-      "version": "0.39.0",
+      "version": "0.39.1",
       "license": "MIT",
       "dependencies": {
         "obliterator": "^2.0.1"
diff --git a/package.json b/package.json
index 476ab3ee..051111b7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mnemonist",
-  "version": "0.39.0",
+  "version": "0.39.1",
   "description": "Curated collection of data structures for the JavaScript/TypeScript.",
   "scripts": {
     "lint": "eslint ./*.js ./utils ./test",