diff --git a/README b/README
index 2855f0b2..93c44324 100644
--- a/README
+++ b/README
@@ -2,7 +2,7 @@
                   GPI-2
               http://www.gpi-site.com
 
-                  Version: 1.5.0
+                  Version: 1.5.1
               Copyright (C) 2013-2021
                  Fraunhofer ITWM
 
diff --git a/configure.ac.in b/configure.ac.in
index d439d86a..cfef29b2 100644
--- a/configure.ac.in
+++ b/configure.ac.in
@@ -8,7 +8,7 @@ echo '   $1   ' | sed -e's/./-/g' >&AS_MESSAGE_FD
 
 # INITS
 AC_PREREQ([2.63])
-AC_INIT([GPI-2], [1.5.0], [https://github.com/cc-hpc-itwm/GPI-2/issues])
+AC_INIT([GPI-2], [1.5.1], [https://github.com/cc-hpc-itwm/GPI-2/issues])
 AC_CONFIG_SRCDIR([src/GPI2.c])
 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_MACRO_DIR([config])
diff --git a/src/GPI2_VERSION.h b/src/GPI2_VERSION.h
index 4a2ab9ce..8212ae80 100644
--- a/src/GPI2_VERSION.h
+++ b/src/GPI2_VERSION.h
@@ -21,7 +21,7 @@ along with GPI-2. If not, see <http://www.gnu.org/licenses/>.
 
 #define GASPI_MAJOR_VERSION (1)
 #define GASPI_MINOR_VERSION (5)
-#define GASPI_REVISION (0)
+#define GASPI_REVISION (1)
 
 #define GASPI_VERSION \
   (GASPI_MAJOR_VERSION + GASPI_MINOR_VERSION/10.0f + GASPI_REVISION/100.0f)