diff --git a/CHANGES.rst b/CHANGES.rst
index c2f1a8a6..e7ff38a5 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,15 +1,20 @@
 Changes
 =======
 
-Version 0.9.1 (UNRELEASED)
+Version 0.9.1 (2023-09-27)
 --------------------------
 
+- Adds unique error messages to Kubernetes job monitor to more easily identify source of problems.
+- Changes Paramiko to version 3.0.0.
+- Changes HTCondor to version 9.0.17 (LTS).
+- Changes Rucio authentication helper to version 1.1.1 allowing users to override the Rucio server and authentication hosts independently of VO name.
 - Fixes intermittent Slurm connection issues by DNS-resolving the Slurm head node IPv4 address before establishing connections.
 - Fixes deletion of failed jobs not being performed when Kerberos is enabled.
 - Fixes job monitoring to consider OOM-killed jobs as failed.
-- Changes Paramiko to version 3.0.0.
-- Changes HTCondor to version 9.0.17 (LTS).
-- Changes Rucio authentication helper to version 1.1.1.
+- Fixes Slurm command generation issues when using fully-qualified image names.
+- Fixes location of HTCondor build dependencies.
+- Fixes detection of default Rucio server and authentication host for ATLAS VO.
+- Fixes container image names to be Podman-compatible.
 
 Version 0.9.0 (2023-01-20)
 --------------------------
diff --git a/docs/openapi.json b/docs/openapi.json
index 3696a41c..181690c0 100644
--- a/docs/openapi.json
+++ b/docs/openapi.json
@@ -122,7 +122,7 @@
   "info": {
     "description": "REANA Job Controller API",
     "title": "reana-job-controller",
-    "version": "0.9.1a3"
+    "version": "0.9.1"
   },
   "paths": {
     "/apispec": {},
diff --git a/reana_job_controller/version.py b/reana_job_controller/version.py
index 3c1b6894..95bab044 100644
--- a/reana_job_controller/version.py
+++ b/reana_job_controller/version.py
@@ -14,4 +14,4 @@
 
 from __future__ import absolute_import, print_function
 
-__version__ = "0.9.1a3"
+__version__ = "0.9.1"