diff --git a/fpco-api.cabal b/fpco-api.cabal
--- a/fpco-api.cabal
+++ b/fpco-api.cabal
@@ -1,5 +1,5 @@
 name:                 fpco-api
-version:              1.1.0
+version:              1.1.1
 synopsis:             Simple interface to the FP Complete IDE API.
 description:          A server and library for communicating with the FP Complete IDE API.
 homepage:             https://www.fpcomplete.com/page/api
@@ -45,7 +45,7 @@
                       ghc-prim,
                       template-haskell >=2.7,
                       attoparsec >=0.10,
-                      syb >=0.4,
+                      syb >=0.3.7,
                       unordered-containers >=0.2,
                       vector >=0.10,
                       pretty-show >=1.6,