diff --git a/.changeset/silent-pandas-talk.md b/.changeset/silent-pandas-talk.md
deleted file mode 100644
index c779b5c..0000000
--- a/.changeset/silent-pandas-talk.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-"windpipe": minor
----
-
-create new `ofError` and `ofUnknown` static methods for creating a stream
diff --git a/.changeset/three-forks-learn.md b/.changeset/three-forks-learn.md
deleted file mode 100644
index 3c13601..0000000
--- a/.changeset/three-forks-learn.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-"windpipe": minor
----
-
-alter exported API
diff --git a/.changeset/warm-dodos-sip.md b/.changeset/warm-dodos-sip.md
deleted file mode 100644
index 5f16174..0000000
--- a/.changeset/warm-dodos-sip.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-"windpipe": minor
----
-
-add `flatTap`
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a8d58a0..36364c0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # windpipe
 
+## 0.4.0
+
+### Minor Changes
+
+- e55d490: create new `ofError` and `ofUnknown` static methods for creating a stream
+- e55d490: alter exported API
+- 341ef76: add `flatTap`
+
 ## 0.3.1
 
 ### Patch Changes
diff --git a/package.json b/package.json
index 77a1140..d206658 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "windpipe",
-  "version": "0.3.1",
+  "version": "0.4.0",
   "description": "Highland but better",
   "type": "module",
   "scripts": {