I have a Pipenv file which looks something like this However, when I create the environment by running pipenv install, the versions antlr4-python3-runtime==4.9.2 and numpy==1.21.2 are installed instead. If I modify the Pipfile in the following way: Then it installs the correct versions. I am a bit confused on what happens when you specify a version with “4.8” vs “==4.8”,