diff --git a/CHANGES.md b/CHANGES.md
index ef00ca5a1..52e4db61f 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,4 +1,4 @@
-# Unreleased
+# Kind 2 v2.1.1
 
 This release includes some minor improvements and various fixes. Notably:
 
diff --git a/doc/usr/source/conf.py b/doc/usr/source/conf.py
index a99b01cad..c912d7ff5 100644
--- a/doc/usr/source/conf.py
+++ b/doc/usr/source/conf.py
@@ -25,7 +25,7 @@
 # The short X.Y version
 version = 'v2.1'
 # The full version, including alpha/beta/rc tags
-release = 'v2.1.0'
+release = 'v2.1.1'
 
 nitpicky = True
 
@@ -250,7 +250,7 @@
 
             \sffamily\Large \textbf{\Huge {Kind 2 User Documentation}}
 
-            \sffamily\Large \textbf{Version 2.1.0}
+            \sffamily\Large \textbf{Version 2.1.1}
 
             \newdateformat{monthdayyear}{%
                 \monthname[\THEMONTH] \THEDAY, \THEYEAR}
diff --git a/dune-project b/dune-project
index 3ff510927..1ea5e24e2 100644
--- a/dune-project
+++ b/dune-project
@@ -1,6 +1,7 @@
 (lang dune 2.7)
 
 (name kind2)
+(version 2.1.1)
 
 (package
  (name kind2)
diff --git a/kind2.opam b/kind2.opam
index 7e6facfaa..5b3f90ea8 100644
--- a/kind2.opam
+++ b/kind2.opam
@@ -1,5 +1,6 @@
 # This file is generated by dune, edit dune-project instead
 opam-version: "2.0"
+version: "2.1.1"
 synopsis:
   "Multi-engine, parallel, SMT-based automatic model checker for safety properties of Lustre programs"
 description: """
diff --git a/src/version.ml b/src/version.ml
index 4f18ce208..61dbb33c0 100644
--- a/src/version.ml
+++ b/src/version.ml
@@ -1,6 +1,6 @@
 let package_name = "kind2"
 
-let base_version = "v2.1.0"
+let base_version = "v2.1.1"
 
 let version =
   (match Build_info.V1.version () with