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-rw-r--r--lib/spack/spack/database.py4
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/spack/spack/database.py b/lib/spack/spack/database.py
index 5110e66c7a..0ada7faa4c 100644
--- a/lib/spack/spack/database.py
+++ b/lib/spack/spack/database.py
@@ -50,7 +50,9 @@ from spack.util.lock import Lock, WriteTransaction, ReadTransaction, LockError
_db_dirname = '.spack-db'
# DB version. This is stuck in the DB file to track changes in format.
-_db_version = Version('0.9.3')
+# Increment by one when the database format changes.
+# versions before 5 were not integers
+_db_version = Version('5')
# Timeout for spack database locks in seconds
_db_lock_timeout = 120