diff --git a/pandoc.cabal b/pandoc.cabal
index 5f0e8f793..98b91cc81 100644
--- a/pandoc.cabal
+++ b/pandoc.cabal
@@ -402,7 +402,7 @@ library
                  scientific >= 0.3 && < 0.4,
                  aeson-pretty >= 0.8.5 && < 0.9,
                  tagsoup >= 0.14.6 && < 0.15,
-                 base64-bytestring >= 0.1 && < 1.1,
+                 base64-bytestring >= 0.1 && < 1.2,
                  zlib >= 0.5 && < 0.7,
                  skylighting >= 0.8.3.2 && < 0.9,
                  skylighting-core >= 0.8.3.2 && < 0.9,
@@ -736,7 +736,7 @@ test-suite test-pandoc
                   pandoc-types >= 1.21 && < 1.22,
                   mtl >= 2.2 && < 2.3,
                   bytestring >= 0.9 && < 0.11,
-                  base64-bytestring >= 0.1 && < 1.1,
+                  base64-bytestring >= 0.1 && < 1.2,
                   exceptions >= 0.8 && < 0.11,
                   text >= 1.1.1.0 && < 1.3,
                   time >= 1.5 && < 1.10,