diff --git a/.devcontainer/post_create.sh b/.devcontainer/post_create.sh
index 15fd069..20d60a0 100644
--- a/.devcontainer/post_create.sh
+++ b/.devcontainer/post_create.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 # install developer dependencies
-pip install .[dev]
+pip install -e .[dev]
 
 # make sure the developer uses pre-commit hooks
 pre-commit install
diff --git a/README.md b/README.md
index cfdbee2..4a23e32 100644
--- a/README.md
+++ b/README.md
@@ -96,7 +96,7 @@ If not using the devcontainer you need to install the package with the
 development dependencies and install the pre-commit hook before commiting any
 changes:
 ```bash
-pip install .[dev]
+pip install -e .[dev]
 pre-commit install
 ```