diff --git a/CHANGELOG b/CHANGELOG
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,7 @@
+2024-11-07
+        * Version bump (4.1). (#561)
+        * Standardize changelog format. (#550)
+
 2024-09-07
         * Version bump (4.0). (#532)
         * Rename operator to avoid name clash. (#36)
@@ -87,8 +91,8 @@
         * Completed the documentation. (#127)
 
 2020-12-06
-        * Version bump (3.2).
-        * Update description, bug-reports, homepage fields in cabal file (#129).
+        * Version bump (3.2). (#65)
+        * Update description, bug-reports, homepage fields in cabal file. (#129)
 
-2019-11-22 Ivan Perez <ivan.perez@nianet.org>
-        * Version bump (3.1).
+2019-11-22
+        * Version bump (3.1). (#46)
diff --git a/copilot-libraries.cabal b/copilot-libraries.cabal
--- a/copilot-libraries.cabal
+++ b/copilot-libraries.cabal
@@ -1,6 +1,6 @@
 cabal-version:       >=1.10
 name:                copilot-libraries
-version:             4.0
+version:             4.1
 synopsis:            Libraries for the Copilot language.
 description:
   Libraries for the Copilot language.
@@ -41,7 +41,7 @@
                , containers       >= 0.4 && < 0.7
                , mtl              >= 2.0 && < 2.4
                , parsec           >= 2.0 && < 3.2
-               , copilot-language >= 4.0 && < 4.1
+               , copilot-language >= 4.1 && < 4.2
 
   exposed-modules:
       Copilot.Library.Libraries