diff --git a/keithley2600/keithley_driver.py b/keithley2600/keithley_driver.py
index 23ef9ac..d4d0ff7 100644
--- a/keithley2600/keithley_driver.py
+++ b/keithley2600/keithley_driver.py
@@ -22,7 +22,7 @@
                                        CLASSES, PROPERTY_LISTS, ALL_CMDS)
 from keithley2600.result_table import FETResultTable
 
-__version__ = 'v1.4.0-dev1'
+__version__ = 'v1.4.0'
 
 logger = logging.getLogger(__name__)