diff --git a/CHANGELOG.md b/CHANGELOG.md
index bc3b1e53..57bdac54 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 2022-11-28 CORE 9.0.1
+
+* Installation
+    * updated protobuf and grpcio-tools versions in pyproject.toml to account for bad version mix
+
 ## 2022-11-18 CORE 9.0.0
 
 * Breaking Changes
diff --git a/configure.ac b/configure.ac
index 872aca17..32f608b4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 
 # this defines the CORE version number, must be static for AC_INIT
-AC_INIT(core, 9.0.0)
+AC_INIT(core, 9.0.1)
 
 # autoconf and automake initialization
 AC_CONFIG_SRCDIR([netns/version.h.in])
diff --git a/daemon/pyproject.toml b/daemon/pyproject.toml
index 594b6668..815f2cad 100644
--- a/daemon/pyproject.toml
+++ b/daemon/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "core"
-version = "9.0.0"
+version = "9.0.1"
 description = "CORE Common Open Research Emulator"
 authors = ["Boeing Research and Technology"]
 license = "BSD-2-Clause"