diff --git a/build-telemac-deps.bat b/build-telemac-deps.bat
index 5febe2801188523b28c2c0ce13ef0ecc50b30388..d1fb6ef2c222f7921a5aac49628532e49f6d6f19 100644
--- a/build-telemac-deps.bat
+++ b/build-telemac-deps.bat
@@ -12,7 +12,7 @@ if "%~1" == "" (
   exit /b 0
 )
 
-rem Create it is it does not exist
+rem Create it if it does not exist
 if not exist "%~1" (
   mkdir "%~1" || exit /b 0
 )
@@ -61,13 +61,13 @@ set mumps=mumps-5.4.1
 set aed2=libaed2-1.3.0
 set gotm=gotm-2019-06-14-opentelemac
 set python=python-3.7.9
-rem GDAL, Fiona and Rasterio Python cannot be installed using PyPI on Windows
+rem GDAL, Fiona and Rasterio Python packages cannot be installed using PyPI on Windows
 rem Also, the version of Shapely that comes through pip is unstable
 rem Instead, we need to use unofficial wheels from Christoph Gohlke’s website
-set gdal=GDAL-3.4.1-cp37-cp37m-win_amd64.whl
-set fiona=Fiona-1.8.20-cp37-cp37m-win_amd64.whl
+set gdal=GDAL-3.4.2-cp37-cp37m-win_amd64.whl
+set fiona=Fiona-1.8.21-cp37-cp37m-win_amd64.whl
 set rasterio=rasterio-1.2.10-cp37-cp37m-win_amd64.whl
-set shapely=Shapely-1.8.0-cp37-cp37m-win_amd64.whl
+set shapely=Shapely-1.8.1.post1-cp37-cp37m-win_amd64.whl
 
 pushd %~dp0deps
 
@@ -79,7 +79,7 @@ if %compiler% == intel (
   goto intel_build
 )
 
-echo Unsupported compiler: %~1
+echo Unsupported compiler: %compiler%
 
 :exit
 popd
@@ -295,7 +295,7 @@ echo Installing Python requirements...
 pip install -r %~dp0requirements.txt || goto install_error
 
 rem Download GDAL, Fiona, Rasterio and Shapely unofficial wheels, to avoid building them locally
-echo Downloading GDAL, Fiona and Rasterio...
+echo Downloading GDAL, Fiona, Rasterio and Shapely...
 curl -O -J https://download.lfd.uci.edu/pythonlibs/x6hvwk7i/%gdal% || goto install_error
 curl -O -J https://download.lfd.uci.edu/pythonlibs/x6hvwk7i/%fiona% || goto install_error
 curl -O -J https://download.lfd.uci.edu/pythonlibs/x6hvwk7i/%rasterio% || goto install_error