diff --git a/doc/USER_MANUAL/copyright_and_version.tex b/doc/USER_MANUAL/copyright_and_version.tex
index 214109d92..16838f981 100644
--- a/doc/USER_MANUAL/copyright_and_version.tex
+++ b/doc/USER_MANUAL/copyright_and_version.tex
@@ -20,7 +20,7 @@ \chapter*{Copyright}
 \noindent
 \textbf{\underline{Evolution of the code:}}\newline
 
-version 4.0, December 2022:
+version 4.0, March 2023:
 Rafael Almada, Jean-Paul Ampuero, Etienne Bachmann, Kangchen Bai, Stephen Beller, Jordan Bishop, Alexis Bottero,
 Emanuele Casarotti, Clement Durochat, Rene Gassmoeller, Hom Nath Gharti, Leopold Grinberg, Aakash Gupta,
 Foivos Karakostas, Dimitri Komatitsch, Qinya Liu, Geordie McBain, Ryan Modrak, Vadim Monteiller, Masaru Nagaso, Elif Oral,
diff --git a/doc/USER_MANUAL/manual_SPECFEM3D_Cartesian.pdf b/doc/USER_MANUAL/manual_SPECFEM3D_Cartesian.pdf
index 4a9e9c5d1..027e1c207 100644
Binary files a/doc/USER_MANUAL/manual_SPECFEM3D_Cartesian.pdf and b/doc/USER_MANUAL/manual_SPECFEM3D_Cartesian.pdf differ
diff --git a/src/specfem3D/specfem3D.F90 b/src/specfem3D/specfem3D.F90
index 02a1faf93..3f9957af2 100644
--- a/src/specfem3D/specfem3D.F90
+++ b/src/specfem3D/specfem3D.F90
@@ -269,7 +269,7 @@
 ! Evolution of the code:
 ! ---------------------
 !
-! version 4.0, December 2022:
+! version 4.0, March 2023:
 !   Rafael Almada, Jean-Paul Ampuero, Etienne Bachmann, Kangchen Bai, Stephen Beller, Jordan Bishop,
 !   Alexis Bottero, Emanuele Casarotti, Clement Durochat, Rene Gassmoeller, Hom Nath Gharti, Leopold Grinberg,
 !   Aakash Gupta, Foivos Karakostas, Dimitri Komatitsch, Qinya Liu, Geordie McBain, Ryan Modrak, Vadim Monteiller,