diff --git a/CHANGELOG b/CHANGELOG
new file mode 100644
--- /dev/null
+++ b/CHANGELOG
@@ -0,0 +1,2 @@
+2019-11-22 Ivan Perez <ivan.perez@nianet.org>
+        * Version bump (3.1).
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:             3.0
+version:             3.1
 synopsis:            Libraries for the Copilot language.
 description:
   Libraries for the Copilot language.
@@ -23,7 +23,7 @@
 stability:           Experimental
 category:            Language, Embedded
 build-type:          Simple
-extra-source-files:  README.md
+extra-source-files:  README.md, CHANGELOG
 
 source-repository head
     type:       git
@@ -41,7 +41,7 @@
                , data-reify       >= 0.6 && < 0.7
                , mtl              >= 2.0 && < 2.3
                , parsec           >= 2.0 && < 3.2
-               , copilot-language >= 3.0 && < 3.1
+               , copilot-language >= 3.1 && < 3.2
 
   exposed-modules:
       Copilot.Library.Libraries