diff --git a/schema/gendummydata.py b/schema/gendummydata.py
index 11f2838a..9224b051 100755
--- a/schema/gendummydata.py
+++ b/schema/gendummydata.py
@@ -22,18 +22,22 @@ LOG_LEVEL = logging.DEBUG  # logging level. set to logging.INFO to reduce output
 SEED_FILE = "/usr/share/dict/words"
 USER_ID = 5            # Users.ID of first bogus user
 PKG_ID = 1             # Packages.ID of first package
-MAX_USERS = 76000      # how many users to 'register'
+# how many users to 'register'
+MAX_USERS = int(os.environ.get("MAX_USERS", 38000))
 MAX_DEVS = .1          # what percentage of MAX_USERS are Developers
 MAX_TUS = .2           # what percentage of MAX_USERS are Trusted Users
-MAX_PKGS = 64000       # how many packages to load
+# how many packages to load
+MAX_PKGS = int(os.environ.get("MAX_PKGS", 32000))
 PKG_DEPS = (1, 15)     # min/max depends a package has
 PKG_RELS = (1, 5)      # min/max relations a package has
 PKG_SRC = (1, 3)       # min/max sources a package has
 PKG_CMNTS = (1, 5)     # min/max number of comments a package has
 CATEGORIES_COUNT = 17  # the number of categories from aur-schema
 VOTING = (0, .001)     # percentage range for package voting
-OPEN_PROPOSALS = 5     # number of open trusted user proposals
-CLOSE_PROPOSALS = 15   # number of closed trusted user proposals
+# number of open trusted user proposals
+OPEN_PROPOSALS = int(os.environ.get("OPEN_PROPOSALS", 15))
+# number of closed trusted user proposals
+CLOSE_PROPOSALS = int(os.environ.get("CLOSE_PROPOSALS", 50))
 RANDOM_TLDS = ("edu", "com", "org", "net", "tw", "ru", "pl", "de", "es")
 RANDOM_URL = ("http://www.", "ftp://ftp.", "http://", "ftp://")
 RANDOM_LOCS = ("pub", "release", "files", "downloads", "src")