diff --git a/NEWS b/NEWS
index 801774f..561deb1 100644
--- a/NEWS
+++ b/NEWS
@@ -1,6 +1,6 @@
 New Features and Important Changes in GammaLib 1.5.1
 
-19 Mars 2018
+26 Mars 2018
 
 
 1. Introduction
diff --git a/doc/source/admin/download.rst b/doc/source/admin/download.rst
index f6dab0b..d2f8710 100644
--- a/doc/source/admin/download.rst
+++ b/doc/source/admin/download.rst
@@ -4,13 +4,14 @@ Download
 ========
 
 The latest GammaLib release is
-`gammalib-1.5.0 <http://cta.irap.omp.eu/ctools/releases/gammalib/gammalib-1.5.0.tar.gz>`_
-(28 January 2018).
+`gammalib-1.5.1 <http://cta.irap.omp.eu/ctools/releases/gammalib/gammalib-1.5.1.tar.gz>`_
+(26 March 2018).
 
 Below a list of older GammaLib releases. Please read the :ref:`sec_release` to
 learn more about new features and corrected bugs in a given release.
 
 To download an older release, click on the corresponding release number:
+`1.5.0 <http://cta.irap.omp.eu/ctools/releases/gammalib/gammalib-1.5.0.tar.gz>`_
 `1.4.3 <http://cta.irap.omp.eu/ctools/releases/gammalib/gammalib-1.4.3.tar.gz>`_
 `1.4.2 <http://cta.irap.omp.eu/ctools/releases/gammalib/gammalib-1.4.2.tar.gz>`_
 `1.4.1 <http://cta.irap.omp.eu/ctools/releases/gammalib/gammalib-1.4.1.tar.gz>`_
diff --git a/doc/source/admin/install_devel.rst b/doc/source/admin/install_devel.rst
index 0779047..2155c59 100644
--- a/doc/source/admin/install_devel.rst
+++ b/doc/source/admin/install_devel.rst
@@ -6,7 +6,7 @@ Installing the development version
 The current development version of the code can be downloaded as source
 tarballs or directly from the `Git <https://git-scm.com/>`_ repository.
 
-The current GammaLib development release is ``gammalib-1.5.0.dev1``.
+The current GammaLib development release is ``gammalib-1.6.0.dev1``.
 
 
 Source tarball
@@ -14,7 +14,7 @@ Source tarball
 
 Download the source tarball from the following link
 
-- `GammaLib <http://cta.irap.omp.eu/ctools/releases/gammalib/gammalib-1.5.0.dev1.tar.gz>`_
+- `GammaLib <http://cta.irap.omp.eu/ctools/releases/gammalib/gammalib-1.6.0.dev1.tar.gz>`_
 
 and follow the instructions on :ref:`sec_install_source`.
 
diff --git a/doc/source/admin/release_history/1.5.1.rst b/doc/source/admin/release_history/1.5.1.rst
index 5f6ac66..605125c 100644
--- a/doc/source/admin/release_history/1.5.1.rst
+++ b/doc/source/admin/release_history/1.5.1.rst
@@ -1,7 +1,7 @@
 .. _1.5.1:
 
-GammaLib 1.5.1 release
-======================
+GammaLib 1.5.1 release (26 March 2018)
+======================================
 
 Overview
 --------
@@ -19,8 +19,3 @@ The following bugs were fixed:
 * [`2340 <https://cta-redmine.irap.omp.eu/issues/2340>`_] -
   Prevent unintentional deallocation of arguments
 * Correct sky map smoothing
-
-
-The following improvements were made:
-
-* ...