diff --git a/too-many-cells.cabal b/too-many-cells.cabal
--- a/too-many-cells.cabal
+++ b/too-many-cells.cabal
@@ -1,6 +1,6 @@
 cabal-version: >=1.10
 name: too-many-cells
-version: 0.1.5.0
+version: 0.1.6.0
 license: GPL-3
 license-file: LICENSE
 copyright: 2019 Gregory W. Schwartz
@@ -46,7 +46,7 @@
     build-depends:
         base >=4.7 && <5,
         aeson >=1.4.0.0,
-        birch-beer >=0.1.1.1,
+        birch-beer >=0.1.2.0,
         bytestring >=0.10.8.2,
         cassava >=0.5.1.0,
         colour >=2.3.4,
@@ -103,7 +103,7 @@
         base >=4.11.1.0,
         too-many-cells -any,
         aeson >=1.4.0.0,
-        birch-beer >=0.1.1.1,
+        birch-beer >=0.1.2.0,
         bytestring >=0.10.8.2,
         cassava >=0.5.1.0,
         colour >=2.3.4,