diff --git a/core-data.cabal b/core-data.cabal
--- a/core-data.cabal
+++ b/core-data.cabal
@@ -1,6 +1,6 @@
 cabal-version: 1.12
 name: core-data
-version: 0.2.1.0
+version: 0.2.1.2
 license: BSD3
 license-file: LICENSE
 copyright: © 2018-2019 Operational Dynamics Consulting Pty Ltd, and Others
@@ -43,7 +43,7 @@
         containers >=0.6.0.1 && <0.7,
         core-text >=0.2.2 && <0.3,
         hashable >=1.2.7.0 && <1.3,
-        prettyprinter >=1.2.1.1 && <1.3,
+        prettyprinter >=1.2.1.1 && <1.6,
         prettyprinter-ansi-terminal >=1.1.1.2 && <1.2,
         scientific >=0.3.6.2 && <0.4,
         text >=1.2.3.1 && <1.3,