diff --git a/DESCRIPTION b/DESCRIPTION
index 0bece03ff05b4d5d8b8cde650aeb56337d0ad2d7..7e31d1d1799e14424ac95e02484b6bd18e2a2cf1 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: airGR
 Type: Package
 Title: Suite of GR Hydrological Models for Precipitation-Runoff Modelling
-Version: 1.6.3.29
+Version: 1.6.3.30
 Date: 2020-11-06
 Authors@R: c(
   person("Laurent", "Coron", role = c("aut", "trl"), comment = c(ORCID = "0000-0002-1503-6204")),
diff --git a/NEWS.md b/NEWS.md
index 46059769afa8bacd37a9acec63b31f0165394fb5..f55f3c6a3e808bbab4bc8a4740e69150b8416b20 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -4,7 +4,7 @@
 
 
 
-### 1.6.3.29 Release Notes (2020-11-06)
+### 1.6.3.30 Release Notes (2020-11-06)
 
 #### New features
 
@@ -36,6 +36,7 @@
 
 #### Minor user-visible changes
 
+- <code>RunModel_GR1A()</code> now uses the Fortran version of the model code. This code is no longer duplicated: the R version which was used is removed.
 - Character argument verification now use partial matching in <code>PE_Oudin()</code> and <code>SeriesAggreg()</code> functions. ([#37](https://gitlab.irstea.fr/HYCAR-Hydro/airgr/-/issues/37))