diff --git a/README.md b/README.md
index fed62718f467431d7a382f766362cb3dc131e790..4f08624aa46f221c4ee637f4398f0e8c3b646c1b 100644
--- a/README.md
+++ b/README.md
@@ -173,12 +173,12 @@ To install a backend, taking MaggotUBA-adapter as an example:
 ```
 git clone --depth 1 --single-branch -b 20230129 https://gitlab.pasteur.fr/nyx/MaggotUBA-adapter MaggotUBA
 cd MaggotUBA
-poetry install
+JULIA_PROJECT=$(pwd) poetry install
 ```
 
 You can check for message "*PyCall is already installed*" in the output of:
 ```
-poetry run python -c 'import julia; julia.install()'
+JULIA_PROJECT=$(pwd) poetry run python -c 'import julia; julia.install()'
 ```
 Note that, if PyCall is not found, the above command will install it.
 However, TaggingBackends still needs to be installed for Python-side *taggingbackends* to successfully call Julia-side *TaggingBackends*.