diff --git a/data/add/add.md b/data/add/add.md
index ef029cd64b33e3f1b622bbea5f48b9d0d01ff5b3..9a2b5f83ba0f4b4fbe05dea839df628347cbefb4 100644
--- a/data/add/add.md
+++ b/data/add/add.md
@@ -13,14 +13,14 @@ The SCAR ADD consists of geographic information layers including:
 
 See the [SCAR website](https://scar.org/data-products/antarctic-digital-database) for more information.
 
-The filename, download link and citation refer to ADD version 7.3 and might need to be adapted when updating the dataset.
+The filename, download link and citation refer to ADD version 7.3 and 7.4 and might need to be adapted when updating the dataset.
 
 ## Files to download
 
 - Title: **Medium resolution vector polygons of the Antarctic coastline**
 - Format: GeoPackage (GPKG)
-- Filename: `add_coastline_medium_res_polygon_v7.3.gpkg`
-- Link: https://data.bas.ac.uk/download/f18d638d4-3c71-442f-9415-01d17842d98d
+- Filename: `add_coastline_medium_res_polygon_v7_4.gpkg`
+- Link: https://data.bas.ac.uk/download/8251141f-9096-4898-9fd6-6e73dc6b6f4e
 - General Link: https://data.bas.ac.uk/collections/e74543c0-4c4e-4b41-aa33-5bb2f67df389/
 
 
@@ -33,6 +33,6 @@ The filename, download link and citation refer to ADD version 7.3 and might need
 
 ## Citation
 
-Gerrish, L., Fretwell, P., & Cooper, P. (2020). Medium resolution vector polygons of the Antarctic coastline (7.3) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/ed0a7b70-5adc-4c1e-8d8a-0bb5ee659d18
+Gerrish, L., Fretwell, P., & Cooper, P. (2021). Medium resolution vector polygons of the Antarctic coastline (7.4) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/747e63e-9d93-49c2-bafc-cf3d3f8e5afa
 
 Gerrish, L., Fretwell, P., & Cooper, P. (2020). Medium resolution vector polygons of Antarctic rock outcrop (7.3) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/077e1f04-7068-4327-a4f2-71d863f70064
diff --git a/process/config.py b/process/config.py
index e02207ac7eb23e154576631f9e30840a7aa47cd1..7b123d4c109d2ef55f958bd3127d5b7cbaee0168 100644
--- a/process/config.py
+++ b/process/config.py
@@ -71,7 +71,7 @@ PATH_RESULT = os.path.abspath(os.path.join('..','result'))
 # need to updated in this section.
 
 # input filepath to ADD Coastlines
-ADD_COASTLINE_IN = os.path.join(PATH_ADD,'add_coastline_medium_res_polygon_v7.3.gpkg')
+ADD_COASTLINE_IN = os.path.join(PATH_ADD,'add_coastline_medium_res_polygon_v7_4.gpkg')
 # input filepath to ADD Rock Outcrops
 ADD_ROCK_OUTCROP_IN = os.path.join(PATH_ADD,'add_rock_outcrop_medium_res_polygon_v7.3.gpkg')