diff --git a/bin/ForceBalance.py b/bin/ForceBalance.py
index 4fe89b95c..45b07e671 100755
--- a/bin/ForceBalance.py
+++ b/bin/ForceBalance.py
@@ -60,7 +60,7 @@ def process(word, color):
     return Answer
 
 def main():
-    printcool("Welcome to ForceBalance version 1.5.4! =D\nForce Field Optimization System\n\nAuthors:\nLee-Ping Wang\nKeri A. McKiernan, Yudong Qiu\nArthur Vigil, Erik G. Brandt, Johnny Israeli", ansi="1", bold=True, minwidth=64)
+    printcool("Welcome to ForceBalance version 1.5.5! =D\nForce Field Optimization System\n\nAuthors:\nLee-Ping Wang\nKeri A. McKiernan, Yudong Qiu\nArthur Vigil, Erik G. Brandt, Johnny Israeli", ansi="1", bold=True, minwidth=64)
     logostr = """
                           ,'+++                                        
                        ,++++++.      .:,,.                              
diff --git a/devtools/conda-recipe/meta.yaml b/devtools/conda-recipe/meta.yaml
index 4ab19e398..03bbaf4b0 100644
--- a/devtools/conda-recipe/meta.yaml
+++ b/devtools/conda-recipe/meta.yaml
@@ -1,6 +1,6 @@
 package:
   name: forcebalance-dev
-  version: !!str 1.5.4
+  version: !!str 1.5.5
 
 source:
   path: ../..
diff --git a/doc/api_header.tex b/doc/api_header.tex
index b1156cbe1..ca231d264 100644
--- a/doc/api_header.tex
+++ b/doc/api_header.tex
@@ -57,7 +57,7 @@
 \vspace*{1cm}
 \begin{center}
 
-{\Large ForceBalance Developer API Guide version 1.5.4}\\
+{\Large ForceBalance Developer API Guide version 1.5.5}\\
 \vspace*{2cm}
 {\large Generated by Doxygen 1.8.11}\\
 \vspace*{2.5 cm}
diff --git a/doc/header.tex b/doc/header.tex
index e59f8051e..700e84763 100644
--- a/doc/header.tex
+++ b/doc/header.tex
@@ -57,7 +57,7 @@
 \vspace*{1cm}
 \begin{center}
 
-{\Large ForceBalance version 1.5.4}\\
+{\Large ForceBalance version 1.5.5}\\
 \vspace*{2cm}
 {\large Generated by Doxygen 1.8.11}\\
 \vspace*{2.5 cm}
diff --git a/setup.py b/setup.py
index c8dd3f460..8ea871758 100644
--- a/setup.py
+++ b/setup.py
@@ -29,7 +29,7 @@
 #| doc/api_header.tex              |#
 #| bin/ForceBalance.py             |#
 #===================================#
-__version__ = "v1.5.4"
+__version__ = "v1.5.5"
 try:
     # use git to find current version
     git_describe = subprocess.check_output(["git", "describe"]).strip()