diff --git a/CMakeLists.txt b/CMakeLists.txt
index b5a0018a2d2a78d180a3fc8035aad947b26885de..8dcf94ab015951441914ae9cc59e581abff856a9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@
 # SPDX-License-Identifier: BSL-1.0
 
 cmake_minimum_required(VERSION 3.10.2)
-project(XRT VERSION 0.4.1)
+project(XRT VERSION 21.0.0)
 
 # CMake 3.11 introduced CMP0072 - Prefer GLVND
 if(POLICY CMP0072)
diff --git a/meson.build b/meson.build
index a559e82719de730cb27b9f8ea878b5fc47ebfe97..fe2c915be4413e8895a2d462af4cb26ef90d10e9 100644
--- a/meson.build
+++ b/meson.build
@@ -4,7 +4,7 @@
 project(
 	'xrt',
 	['c', 'cpp'],
-	version: '0.4.1',
+	version: '21.0.0',
 	license: 'BSL-1.0',
 	meson_version: '>=0.49.0',
 	default_options: [
diff --git a/src/xrt/state_trackers/oxr/oxr_instance.c b/src/xrt/state_trackers/oxr/oxr_instance.c
index 9b02d2bc5677e8909332ec02f8a36baacdbb48a6..1600e05712de7cf3907dafb5b6ff852ee81779b2 100644
--- a/src/xrt/state_trackers/oxr/oxr_instance.c
+++ b/src/xrt/state_trackers/oxr/oxr_instance.c
@@ -339,7 +339,7 @@ oxr_instance_create(struct oxr_logger *log, const XrInstanceCreateInfo *createIn
 XrResult
 oxr_instance_get_properties(struct oxr_logger *log, struct oxr_instance *inst, XrInstanceProperties *instanceProperties)
 {
-	instanceProperties->runtimeVersion = XR_MAKE_VERSION(0, 1, 42);
+	instanceProperties->runtimeVersion = XR_MAKE_VERSION(21, 0, 0);
 	snprintf(instanceProperties->runtimeName, XR_MAX_RUNTIME_NAME_SIZE - 1, "Monado(XRT) by Collabora et al '%s'",
 	         u_git_tag);