diff --git a/CHANGELOG b/CHANGELOG
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,7 @@
+2023-05-07
+        * Version bump (3.15). (#438)
+        * Remove outdated comment about pretty-printer. (#428)
+
 2023-03-07
         * Version bump (3.14). (#422)
         * Remove function Copilot.Language.prettyPrint. (#412)
diff --git a/copilot-language.cabal b/copilot-language.cabal
--- a/copilot-language.cabal
+++ b/copilot-language.cabal
@@ -1,6 +1,6 @@
 cabal-version:       >=1.10
 name:                copilot-language
-version:             3.14
+version:             3.15
 synopsis:            A Haskell-embedded DSL for monitoring hard real-time
                      distributed systems.
 description:
@@ -42,9 +42,9 @@
                , data-reify            >= 0.6 && < 0.7
                , mtl                   >= 2.0 && < 3
 
-               , copilot-core          >= 3.14 && < 3.15
-               , copilot-interpreter   >= 3.14 && < 3.15
-               , copilot-theorem       >= 3.14 && < 3.15
+               , copilot-core          >= 3.15 && < 3.16
+               , copilot-interpreter   >= 3.15 && < 3.16
+               , copilot-theorem       >= 3.15 && < 3.16
 
   exposed-modules: Copilot.Language
                  , Copilot.Language.Operators.BitWise
diff --git a/src/Copilot/Language.hs b/src/Copilot/Language.hs
--- a/src/Copilot/Language.hs
+++ b/src/Copilot/Language.hs
@@ -3,8 +3,7 @@
 -- | Main Copilot language export file.
 --
 -- This is mainly a meta-module that re-exports most definitions in this
--- library. It also provides a default pretty printer that prints a
--- specification to stdout.
+-- library.
 
 {-# LANGUAGE Safe #-}