diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 17b4b7ce..1605901f 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -47,4 +47,4 @@ jobs:
         with:
           name: Pilot_${{ matrix.branch }}
           path: tmp_dir
-          retention-days: 1
+          retention-days: 3
diff --git a/Pilot/pilotCommands.py b/Pilot/pilotCommands.py
index b6d9cef3..e0ef9db4 100644
--- a/Pilot/pilotCommands.py
+++ b/Pilot/pilotCommands.py
@@ -203,6 +203,7 @@ def _sourceEnvironmentFile(self):
         if retCode:
             self.log.error("Could not parse the %s file [ERROR %d]" % (self.pp.installEnv["DIRAC_RC_PATH"], retCode))
             self.exitWithError(retCode)
+        self.pp.installEnv = {}
         for line in output.split("\n"):
             try:
                 var, value = [vx.strip() for vx in line.split("=", 1)]