diff --git a/src/poetry/console/commands/config.py b/src/poetry/console/commands/config.py
index 88fa3f00103..60eaa33b046 100644
--- a/src/poetry/console/commands/config.py
+++ b/src/poetry/console/commands/config.py
@@ -76,6 +76,7 @@ class ConfigCommand(Command):
     def unique_config_values(self) -> dict[str, tuple[Any, Any]]:
         unique_config_values = {
             "cache-dir": (str, lambda val: str(Path(val))),
+            "data-dir": (str, lambda val: str(Path(val))),
             "virtualenvs.create": (boolean_validator, boolean_normalizer),
             "virtualenvs.in-project": (boolean_validator, boolean_normalizer),
             "virtualenvs.options.always-copy": (boolean_validator, boolean_normalizer),
@@ -102,6 +103,7 @@ def unique_config_values(self) -> dict[str, tuple[Any, Any]]:
             ),
             "solver.lazy-wheel": (boolean_validator, boolean_normalizer),
             "keyring.enabled": (boolean_validator, boolean_normalizer),
+            "python.installation-dir": (str, lambda val: str(Path(val))),
         }
 
         return unique_config_values