diff --git a/serversession/serversession.cabal b/serversession/serversession.cabal
index e0a38e5..f47b64f 100644
--- a/serversession/serversession.cabal
+++ b/serversession/serversession.cabal
@@ -23,7 +23,7 @@ library
   build-depends:
       base                      == 4.*
     , aeson
-    , base64-bytestring         == 1.0.*
+    , base64-bytestring         >= 1.0 && < 1.2
     , bytestring
     , data-default
     , hashable