diff --git a/json-syntax.cabal b/json-syntax.cabal
index 9eeeb9b..a10f1ed 100644
--- a/json-syntax.cabal
+++ b/json-syntax.cabal
@@ -48,7 +48,7 @@ library
     , bytebuild            >=0.3.10 && <0.4
     , byteslice            >=0.2.9  && <0.3
     , bytesmith            >=0.3.8  && <0.4
-    , bytestring           >=0.10.8 && <0.12
+    , bytestring           >=0.10.8 && <0.13
     , contiguous           >=0.6    && <0.7
     , natural-arithmetic   >=0.1.2  && <0.3
     , primitive            >=0.7    && <0.10
@@ -58,7 +58,7 @@ library
     , text-short           >=0.1.3  && <0.2
     , transformers         >=0.5.6  && <0.7
     , word-compat          >=0.0.6  && <0.1
-    , zigzag               >=0.0.1  && <0.1
+    , zigzag               >=0.0.1  && <0.2
 
   hs-source-dirs:  src
   ghc-options:     -O2