diff --git a/sparse-tensor.cabal b/sparse-tensor.cabal
--- a/sparse-tensor.cabal
+++ b/sparse-tensor.cabal
@@ -1,5 +1,5 @@
 name:                sparse-tensor
-version:             0.2.1.2
+version:             0.2.1.3
 synopsis:            typesafe tensor algebra library
 description:
     .
@@ -45,7 +45,7 @@
                        cereal                     >= 0.4 && < 0.6,
                        bytestring                 >= 0.10 && < 0.11,
                        zlib                       >= 0.6 && < 0.7,
-                       ad                         >= 4.2 && < 4.4,
+                       ad                         >= 4.2 && < 4.5,
                        hmatrix                    >= 0.16.1 && < 0.21
   exposed-modules:     Math.Tensor
                        Math.Tensor.LorentzGenerator