diff --git a/AUTHORS b/AUTHORS
index 8c512a6c8..eebd57026 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -1,9 +1,11 @@
 #Contributors to the source code
 Arbor Nicolas
+Bala Mateusz
 Baran Jakub
 Benoit Didier
 Bert Julien
 Boersma David
+Bolsa-Ferruz Marta
 Cajgfinger Thomas
 Cassol-Brunner Franca
 Chamberland Marc
@@ -13,9 +15,12 @@ Cuplov Vesna
 Dedes George
 Deschler Thomas
 Dubois Albertine
+Edsall Christopher
+Etxebeste Ane
 Frisson Thibault
 Fuchs Hermann
 Garcia Marie-Paule
+Garpebring Anders
 Germano Russo
 Gil Alex Vergara
 Grevillot Loic
@@ -31,11 +36,16 @@ Letang Jean-Michel
 Leung Edwin
 Lönn Gustaf
 Maigne Lydia
+Manger Sam
 Martinez Imma
 Miklavec Mojca
 Mouton Claire
+Padilla Fatima
 Patay Gergely
 Perez Hector
+Pommranz Christian
+Price Emlyn
+Presles Benoit
 Rehfeld Niklas
 Resch Andreas 
 Rey Martin
@@ -44,8 +54,10 @@ Romero Edward
 Santin Giovanni
 Sarrut David
 Simon Luc
+Size Gao
 Smekens Francois
 Staelens Steven
+Stockhoff Mariele
 Strul Daniel
 Strydhorst Jared
 Stute Simon
diff --git a/Gate.cc b/Gate.cc
index 768605ebb..85606c673 100644
--- a/Gate.cc
+++ b/Gate.cc
@@ -158,7 +158,7 @@ void welcome()
 {
   GateMessage("Core", 0, G4endl);
   GateMessage("Core", 0, "*************************************************" << G4endl);
-  GateMessage("Core", 0, " GATE version 9.0 (December 2019)" << G4endl);
+  GateMessage("Core", 0, " GATE version 9.0 (March 2020)" << G4endl);
   GateMessage("Core", 0, " Copyright : OpenGATE Collaboration" << G4endl);
   GateMessage("Core", 0, " Reference : Phys. Med. Biol. 49 (2004) 4543-4561" << G4endl);
   GateMessage("Core", 0, " Reference : Phys. Med. Biol. 56 (2011) 881-901" << G4endl);
@@ -254,7 +254,7 @@ int main( int argc, char* argv[] )
           break;
         case 'v':
           ss << G4VERSION_MAJOR << "." << G4VERSION_MINOR << "." << G4VERSION_PATCH;
-          std::cout << "Gate version is 8.2 ; Geant4 version is " << ss.str() << std::endl;
+          std::cout << "Gate version is 9.0 ; Geant4 version is " << ss.str() << std::endl;
           exit(0);
           break;
         case 'a':
diff --git a/release_notes/v9.0.txt b/release_notes/v9.0.txt
new file mode 100644
index 000000000..b2fa235e2
--- /dev/null
+++ b/release_notes/v9.0.txt
@@ -0,0 +1,58 @@
+#  *ooooOOOO0000OOOOoooo*  #
+#                        #
+#       GATE v9.0        #
+#                        #
+#        03/2020         #
+#                        #
+#  *ooooOOOO0000OOOOoooo*  #
+
+
+
+------------
+Main new features
+------------
+
+- MultiSystem and GateToTree (numpy output)
+  https://opengate.readthedocs.io/en/latest/data_output_management.html#new-unified-tree-output-root-numpy-and-more
+  https://github.com/OpenGATE/Gate/pull/289
+  
+- Compton Camera module
+  https://opengate.readthedocs.io/en/latest/compton_camera_imaging_simulations.html
+  https://github.com/OpenGATE/Gate/pull/273
+
+- Extended source
+  https://github.com/OpenGATE/GateContrib/tree/master/imaging/ExtendedVSource
+  https://github.com/OpenGATE/Gate/pull/271
+
+- PhaseSpaceActor with npy output
+  https://github.com/OpenGATE/Gate/pull/242
+
+- Read number of primaries per run in a file
+  https://github.com/OpenGATE/Gate/pull/233 
+
+- pytorch (ARF-NN and GAN phase-space)
+  https://opengate.readthedocs.io/en/latest/compilation_instructions.html#libtorch-optional
+  https://github.com/OpenGATE/GateContrib/tree/master/imaging/garf
+  https://github.com/OpenGATE/GateContrib/tree/master/dosimetry/gaga-phsp
+
+
+----------
+Bugs fixed
+----------
+
+- See the github "issues" section https://github.com/OpenGATE/Gate/issues
+- PET debug Noise and DeadTime
+- GateEnergySpectrumActor bug and options
+- PhaseSpaceActor
+- Enable coincidence sorting with generic repeater
+- no more unmaintained GPU stuff
+- etc ...
+
+
+-------------
+Documentation
+-------------
+
+GATE home page:	    http://www.opengatecollaboration.org
+GATE documentation: https://opengate.readthedocs.io
+Gate examples:      https://github.com/OpenGATE/GateContrib