diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8b43b17b..a727a27f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,8 +2,10 @@
 
 All notable changes to this project will be documented in this file.
 
-## [Unreleased Changes](https://github.com/thouska/spotpy/compare/v1.5.13...master)
+## [Unreleased Changes](https://github.com/thouska/spotpy/compare/v1.5.15...master)
 
+## Spotpy Version [1.5.15] (https://github.com/thouska/spotpy/compare/v1.5.14..v.1.5.15) (2022-06-21)
+## Spotpy Version [1.5.14] (https://github.com/thouska/spotpy/compare/v1.5.13..v.1.5.14) (2020-10-09)
 ## Spotpy Version [1.5.13](https://github.com/thouska/spotpy/compare/v1.5.12...v1.5.13) (2020-09-07)
 
 * Introducing package dependencies as requested [#249](https://github.com/thouska/spotpy/issues/249)
diff --git a/setup.py b/setup.py
index df4c4eea..7f22ffc6 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
 
 setup(
   name = 'spotpy',
-  version = '1.5.14',
+  version = '1.5.15',
   description = 'A Statistical Parameter Optimization Tool',
   long_description=open(os.path.join(os.path.dirname(__file__),
                                        "README.rst")).read(),
@@ -27,5 +27,6 @@
         'Programming Language :: Python',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
+        'Programming Language :: Python :: 3.9',
         'Topic :: Software Development :: Libraries :: Python Modules'],
         )
diff --git a/spotpy/__init__.py b/spotpy/__init__.py
index ac788820..c1360f70 100644
--- a/spotpy/__init__.py
+++ b/spotpy/__init__.py
@@ -41,4 +41,4 @@
 from . import describe            # Contains some helper functions to describe samplers and set-ups
 from .hydrology import signatures # Quantifies goodness of fit between simulation and evaluation data with hydrological signatures
 
-__version__ = '1.5.14'
\ No newline at end of file
+__version__ = '1.5.15'
\ No newline at end of file
diff --git a/spotpy/examples/tutorial_dream_hymod.py b/spotpy/examples/tutorial_dream_hymod.py
index ded95180..792eb07e 100644
--- a/spotpy/examples/tutorial_dream_hymod.py
+++ b/spotpy/examples/tutorial_dream_hymod.py
@@ -29,7 +29,7 @@
     #Select number of maximum repetitions
     rep=5000
     
-    # Select five chains and set the Gelman-Rubin convergence limit
+    # Select seven chains and set the Gelman-Rubin convergence limit
     delta                  = 3
     nChains                = 7
     convergence_limit      = 1.2