diff --git a/hgraph.cabal b/hgraph.cabal
index 77844f4..3b5d3df 100644
--- a/hgraph.cabal
+++ b/hgraph.cabal
@@ -21,7 +21,7 @@ executable hgraph
                    repa >=3.2,
                    text -any,
                    transformers >=0.3.0,
-                   vector >=0.10.9,
+                   vector >=0.7,
                    mtl >=2.1 && <3
     main-is: Main.hs
     buildable: True