diff --git a/ChangeLog b/ChangeLog
index 7f0af2be..2a5e19d9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2019.10.20, Version 1.33.1 (Stable)
+
+Changes since version 1.33.0:
+
+* linux: fix arm64 SYS__sysctl build breakage (Ben Noordhuis)
+
+
 2019.10.17, Version 1.33.0 (Stable), e56e42e9310e4437e1886dbd6771792c14c0a5f3
 
 Changes since version 1.32.0:
diff --git a/configure.ac b/configure.ac
index fb5997b9..07ad0cde 100644
--- a/configure.ac
+++ b/configure.ac
@@ -13,7 +13,7 @@
 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 AC_PREREQ(2.57)
-AC_INIT([libuv], [1.33.0], [https://github.com/libuv/libuv/issues])
+AC_INIT([libuv], [1.33.1], [https://github.com/libuv/libuv/issues])
 AC_CONFIG_MACRO_DIR([m4])
 m4_include([m4/libuv-extra-automake-flags.m4])
 m4_include([m4/as_case.m4])
diff --git a/include/uv/version.h b/include/uv/version.h
index 1c7b1aa3..ca94be6d 100644
--- a/include/uv/version.h
+++ b/include/uv/version.h
@@ -33,8 +33,8 @@
 #define UV_VERSION_MAJOR 1
 #define UV_VERSION_MINOR 33
 #define UV_VERSION_PATCH 1
-#define UV_VERSION_IS_RELEASE 0
-#define UV_VERSION_SUFFIX "dev"
+#define UV_VERSION_IS_RELEASE 1
+#define UV_VERSION_SUFFIX ""
 
 #define UV_VERSION_HEX  ((UV_VERSION_MAJOR << 16) | \
                          (UV_VERSION_MINOR <<  8) | \