diff --git a/CHANGELOG.md b/CHANGELOG.md
index 49d6ee48..e10a8fb7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,7 @@
 # Changelog
 All notable changes to this project will be documented in this file.
 
-## ??? - Unreleased
+## 1.27.0 - 2023-03-05
 - Change semantics around bracket tuples to no longer be equal to regular tuples.
 - Add `index` argument to `ffi/write` for symmetry with `ffi/read`.
 - Add `buffer/push-at`
diff --git a/Makefile b/Makefile
index a108525d..6aa76508 100644
--- a/Makefile
+++ b/Makefile
@@ -176,9 +176,9 @@ build/c/janet.c: build/janet_boot src/boot/boot.janet
 ########################
 
 ifeq ($(UNAME), Darwin)
-SONAME=libjanet.1.26.dylib
+SONAME=libjanet.1.27.dylib
 else
-SONAME=libjanet.so.1.26
+SONAME=libjanet.so.1.27
 endif
 
 build/c/shell.c: src/mainclient/shell.c
diff --git a/meson.build b/meson.build
index 9da32926..02e6d96d 100644
--- a/meson.build
+++ b/meson.build
@@ -20,7 +20,7 @@
 
 project('janet', 'c',
   default_options : ['c_std=c99', 'build.c_std=c99', 'b_lundef=false', 'default_library=both'],
-  version : '1.26.1')
+  version : '1.27.0')
 
 # Global settings
 janet_path = join_paths(get_option('prefix'), get_option('libdir'), 'janet')
diff --git a/src/boot/boot.janet b/src/boot/boot.janet
index ae909686..5ab4bc87 100644
--- a/src/boot/boot.janet
+++ b/src/boot/boot.janet
@@ -129,20 +129,18 @@
 # For macros, we define an imcomplete odd? function that will be overriden.
 (defn odd? [x] (= 1 (mod x 2)))
 
-(def idempotent?
-  ```
-  (idempotent? x)
+(def- non-atomic-types
+  {:array true
+   :tuple true
+   :table true
+   :buffer true
+   :symbol true
+   :struct true})
 
-  Check if x is a value that evaluates to itself when compiled.
-  ```
-  (do
-    (def non-atomic-types
-      {:array true
-       :tuple true
-       :table true
-       :buffer true
-       :struct true})
-    (fn idempotent? [x] (not (in non-atomic-types (type x))))))
+(defn idempotent?
+  "Check if x is a value that evaluates to itself when compiled."
+  [x]
+  (not (in non-atomic-types (type x))))
 
 # C style macros and functions for imperative sugar. No bitwise though.
 (defn inc "Returns x + 1." [x] (+ x 1))
diff --git a/src/conf/janetconf.h b/src/conf/janetconf.h
index 666cd01e..8b030b50 100644
--- a/src/conf/janetconf.h
+++ b/src/conf/janetconf.h
@@ -4,10 +4,10 @@
 #define JANETCONF_H
 
 #define JANET_VERSION_MAJOR 1
-#define JANET_VERSION_MINOR 26
-#define JANET_VERSION_PATCH 1
-#define JANET_VERSION_EXTRA "-dev"
-#define JANET_VERSION "1.26.1-dev"
+#define JANET_VERSION_MINOR 27
+#define JANET_VERSION_PATCH 0
+#define JANET_VERSION_EXTRA ""
+#define JANET_VERSION "1.27.0"
 
 /* #define JANET_BUILD "local" */