diff --git a/calendar/gregorian.go b/calendar/gregorian.go
index 590bbb1..527ea3c 100644
--- a/calendar/gregorian.go
+++ b/calendar/gregorian.go
@@ -1,4 +1,4 @@
-// Package calendar is part of the Carbon package.
+// Package calendar is part of the carbon package.
 package calendar
 
 import (
diff --git a/calendar/julian/julian.go b/calendar/julian/julian.go
index 477ce19..5fcad29 100644
--- a/calendar/julian/julian.go
+++ b/calendar/julian/julian.go
@@ -1,4 +1,4 @@
-// Package julian is part of the Carbon package.
+// Package julian is part of the carbon package.
 package julian
 
 import (
diff --git a/calendar/lunar/lunar.go b/calendar/lunar/lunar.go
index c1da4f2..b4ec7f3 100644
--- a/calendar/lunar/lunar.go
+++ b/calendar/lunar/lunar.go
@@ -1,4 +1,4 @@
-// Package lunar is part of the Carbon package.
+// Package lunar is part of the carbon package.
 package lunar
 
 import (
diff --git a/calendar/persian/persian.go b/calendar/persian/persian.go
index e488719..5ef79f2 100644
--- a/calendar/persian/persian.go
+++ b/calendar/persian/persian.go
@@ -1,4 +1,4 @@
-// Package persian is part of the Carbon package.
+// Package persian is part of the carbon package.
 package persian
 
 import (