diff --git a/docs/source/conf.py b/docs/source/conf.py
index dd53fb67..71bd80ab 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -13,7 +13,7 @@
 import arpes
 import arpes.config
 
-print("arpes version: {arpes.__version__}")
+print(f"arpes version: {arpes.__version__}")
 
 # -- Project information -----------------------------------------------------
 project = "arpes"