diff --git a/CHANGELOG.md b/CHANGELOG.md
index 96fb820f43c21add71aeea07cb7c704364d33d4a..7c5890f3f6a35827df1a1a4ef208adc2783f95ff 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,18 @@
+Release v1.8.4 (2021-09-15)
+---------------------------
+
+### Features & Improvements
+
+- Support `--no-isolation` option for `install`, `lock`, `update`, `remove`, `sync` commands. [#640](https://github.com/pdm-project/pdm/issues/640)
+- Make `project_max_depth` configurable and default to `5`. [#643](https://github.com/pdm-project/pdm/issues/643)
+
+### Bug Fixes
+
+- Don't try `pdm-pep517` backend on Python 2.7 when installing self as editable. [#640](https://github.com/pdm-project/pdm/issues/640)
+- Fix a bug that existing shebang can't be replaced correctly. [#651](https://github.com/pdm-project/pdm/issues/651)
+- Fix the version range saving for prerelease versions. [#654](https://github.com/pdm-project/pdm/issues/654)
+
+
 Release v1.8.3 (2021-09-07)
 ---------------------------
 
diff --git a/news/640.bugfix.md b/news/640.bugfix.md
deleted file mode 100644
index 8d239f5e562ac086486bef6f86a9c0618b76dfdb..0000000000000000000000000000000000000000
--- a/news/640.bugfix.md
+++ /dev/null
@@ -1 +0,0 @@
-Don't try `pdm-pep517` backend on Python 2.7 when installing self as editable.
diff --git a/news/640.feature.md b/news/640.feature.md
deleted file mode 100644
index ab35ebcdfe8a3f43a4566a2768ebcb0a5d5484c2..0000000000000000000000000000000000000000
--- a/news/640.feature.md
+++ /dev/null
@@ -1 +0,0 @@
-Support `--no-isolation` option for `install`, `lock`, `update`, `remove`, `sync` commands.
diff --git a/news/643.feature.md b/news/643.feature.md
deleted file mode 100644
index d767d1cee2c7b7c7fd29e4cdeba3ad705bd008f2..0000000000000000000000000000000000000000
--- a/news/643.feature.md
+++ /dev/null
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-Make `project_max_depth` configurable and default to `5`.
diff --git a/news/651.bugfix.md b/news/651.bugfix.md
deleted file mode 100644
index 797eeb17bb38c6e411246e53c901ce4fa93483e2..0000000000000000000000000000000000000000
--- a/news/651.bugfix.md
+++ /dev/null
@@ -1 +0,0 @@
-Fix a bug that existing shebang can't be replaced correctly.
diff --git a/news/654.bugfix.md b/news/654.bugfix.md
deleted file mode 100644
index 06eb1c9a252b73695804e61cfc79428a40dbe214..0000000000000000000000000000000000000000
--- a/news/654.bugfix.md
+++ /dev/null
@@ -1 +0,0 @@
-Fix the version range saving for prerelease versions.