diff --git a/ChangeLog b/ChangeLog
index fa6aac4..1c73b6a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -3,6 +3,7 @@
         * Version 1.5.0 released
         ========================
 
+        Add csresspec script (#2289)
         Add ctools::time_reference constant and remove ctools::time_reference() method (#2295)
         Correctly strip .gz suffix from output filenames (#2287)
         Support On/Off analysis in cslightcrv and csphasecrv (#2273)
diff --git a/NEWS b/NEWS
index 33d45bb..904941b 100644
--- a/NEWS
+++ b/NEWS
@@ -261,6 +261,11 @@ csresmap - Generate residual map
 None
 
 
+csresspec - Generate residual spectrum
+--------------------------------------
+Add script to generate a residual spectrum (#2289)
+
+
 csroot2caldb - Generates calibration database from ROOT file
 ------------------------------------------------------------
 None
diff --git a/doc/source/admin/release_history/1.5.rst b/doc/source/admin/release_history/1.5.rst
index 46e85a1..b11d7ea 100644
--- a/doc/source/admin/release_history/1.5.rst
+++ b/doc/source/admin/release_history/1.5.rst
@@ -55,6 +55,8 @@ Improvements
 New features
 ------------
 
+* [`2289 <https://cta-redmine.irap.omp.eu/issues/2289>`_] -
+  Add :ref:`csresspec` script
 * [`2208 <https://cta-redmine.irap.omp.eu/issues/2208>`_] -
   Add :ref:`csphagen` script
 * [`2180 <https://cta-redmine.irap.omp.eu/issues/2180>`_] -
diff --git a/doc/source/users/reference_manual/csresspec.rst b/doc/source/users/reference_manual/csresspec.rst
index 8061786..ad7535a 100644
--- a/doc/source/users/reference_manual/csresspec.rst
+++ b/doc/source/users/reference_manual/csresspec.rst
@@ -179,7 +179,7 @@ Standard parameters
 ``(mode = ql) [string]``
     Mode of automatic parameters (default is "ql", i.e. "query and learn").
 
-``(logfile = csresmap.log) [string]``
+``(logfile = csresspec.log) [string]``
     Log filename.