diff --git a/documentation/pestpp_users_guide_v5.2.15.docx b/documentation/pestpp_users_guide_v5.2.15.docx
new file mode 100644
index 00000000..92a60ec9
Binary files /dev/null and b/documentation/pestpp_users_guide_v5.2.15.docx differ
diff --git a/documentation/pestpp_users_manual.md b/documentation/pestpp_users_manual.md
index 47fe7dd4..42c3e78f 100644
--- a/documentation/pestpp_users_manual.md
+++ b/documentation/pestpp_users_manual.md
@@ -1,7 +1,7 @@
 
  <img src="./media/image1.png" style="width:6.26806in;height:1.68194in" alt="A close up of a purple sign Description automatically generated" />
 
-# <a id='s1' />Version 5.2.14
+# <a id='s1' />Version 5.2.15
 
 <img src="./media/image2.png" style="width:6.26806in;height:3.05972in" />
 
@@ -70,7 +70,7 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
 
 # Table of Contents
 
-- [Version 5.2.14](#s1)
+- [Version 5.2.15](#s1)
 - [Acknowledgements](#s2)
 - [Preface](#s3)
 - [License](#s4)
diff --git a/src/libs/common/config_os.h b/src/libs/common/config_os.h
index c55ffe16..2b1d663a 100644
--- a/src/libs/common/config_os.h
+++ b/src/libs/common/config_os.h
@@ -2,7 +2,7 @@
 #define CONFIG_OS_H_
 
 
-#define PESTPP_VERSION "5.2.14";
+#define PESTPP_VERSION "5.2.15";
 
 #if defined(_WIN32) || defined(_WIN64)
 #define OS_WIN