diff --git a/docs/source/conf.py b/docs/source/conf.py
index ecae6ca..0016b59 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -55,7 +55,7 @@
 
 # General information about the project.
 project = "gliderpy"
-copyright = str(year) + ", Filipe Fernandes"
+copyright = f"{year}, Filipe Fernandes"
 author = "Filipe Fernandes"
 
 # The version info for the project you're documenting, acts as replacement for