diff --git a/CHANGELOG b/CHANGELOG
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,7 @@
+2022-01-07
+        * Version bump (3.7). (#287)
+        * Relax version contraints on what4. (#277)
+
 2021-11-07
         * Version bump (3.6). (#264)
         * Fix outdated/broken links. (#252)
diff --git a/copilot-theorem.cabal b/copilot-theorem.cabal
--- a/copilot-theorem.cabal
+++ b/copilot-theorem.cabal
@@ -14,7 +14,7 @@
   <https://copilot-language.github.io>.
 
 
-version                   : 3.6
+version                   : 3.7
 license                   : BSD3
 license-file              : LICENSE
 maintainer                : Ivan Perez <ivan.perezdominguez@nasa.gov>
@@ -70,9 +70,9 @@
                           , random        >= 1.1 && < 1.2
                           , transformers  >= 0.5 && < 0.6
                           , xml           >= 1.3 && < 1.4
-                          , what4         >= 1.1 && < 1.2
+                          , what4         >= 1.1 && < 1.3
 
-                          , copilot-core  >= 3.6 && < 3.7
+                          , copilot-core  >= 3.7 && < 3.8
 
   exposed-modules         : Copilot.Theorem
                           , Copilot.Theorem.Prove