diff --git a/docs/CONTRIBUTORS b/docs/CONTRIBUTORS
index fa22f84fd..82e6160b6 100644
--- a/docs/CONTRIBUTORS
+++ b/docs/CONTRIBUTORS
@@ -136,6 +136,7 @@ Mostafa Gamal
 Nandu Raj
 Nathan Kohagen
 Nathan Myers
+Nolan Poe
 Oleh Maksymenko
 Patrick Stewart
 Paul Swirhun
diff --git a/src/config_rev b/src/config_rev
index 0640d85b1..bbbcf9b3f 100755
--- a/src/config_rev
+++ b/src/config_rev
@@ -22,7 +22,11 @@ Args = parser.parse_args()
 
 os.chdir(Args.directory)
 
-rev = 'UNKNOWN_REV'
+if 'VERILATOR_SRC_VERSION' in os.environ:
+    rev = os.environ['VERILATOR_SRC_VERSION']
+else:
+    rev = 'UNKNOWN_REV'
+
 data = os.popen('git describe').read()
 
 match = re.search(r'^(v[0-9].*)', data)