diff --git a/data/gebco/gebco.md b/data/gebco/gebco.md
index 44519092f00a64662aa3a6fe2f423868101384d0..ea97d490841110fbf52b4f053b292f05f11637a1 100644
--- a/data/gebco/gebco.md
+++ b/data/gebco/gebco.md
@@ -6,16 +6,22 @@ GEBCO aims to provide the most authoritative, publicly available bathymetry data
 
 See the [GEBCO website](https://www.gebco.net) for more information.
 
-The filename, download link and citation refer to GEBCO version 2020 and might need to be adapted when updating the dataset.
+The filename, download link and citation refer to GEBCO version 2021 and might need to be adapted when updating the dataset.
 
 ## Files to download
 
-- Title: **GEBCO global coverage grid**
+- Title: **GEBCO_2021 Grid (ice surface elevation)**
 - Format: netCDF (NC)
-- Filename: `GEBCO_2020.nc`
-- Link: https://www.bodc.ac.uk/data/open_download/gebco/gebco_2020/zip/ (version 2020)
+- Filename: `GEBCO_2021.nc`
+- Link: https://www.bodc.ac.uk/data/open_download/gebco/gebco_2021/zip/ (version 2021)
 - General Link: https://www.gebco.net/data_and_products/gridded_bathymetry_data/
 
-## Citation (version 2020)
+- Title: **GEBCO_2021 Grid (sub-ice topo/bathy)**
+- Format: netCDF (NC)
+- Filename: `GEBCO_2021_sub_ice_topo.nc`
+- Link: https://www.bodc.ac.uk/data/open_download/gebco/gebco_2021_sub_ice_topo/zip/ (version 2021)
+- General Link: https://www.gebco.net/data_and_products/gridded_bathymetry_data/
+
+## Citation (version 2021)
 
-GEBCO Compilation Group (2020) GEBCO 2020 Grid (doi:10.5285/a29c5465-b138-234d-e053-6c86abc040b9)
+GEBCO Compilation Group (2021) GEBCO 2021 Grid (doi:10.5285/c6612cbe-50b3-0cff-e053-6c86abc09f8f)