diff --git a/tahoe-ssk.cabal b/tahoe-ssk.cabal
index abbeaf2456f15f3c39a70ee73a9d4da7f3b3c43f..f6b99a4bff38c047d29ccb320e14d1bd1d21fd2e 100644
--- a/tahoe-ssk.cabal
+++ b/tahoe-ssk.cabal
@@ -135,7 +135,7 @@ test-suite tahoe-ssk-test
   build-depends:
     , asn1-encoding
     , asn1-types
-    , base            ^>=4.14.3.0
+    , base
     , base32
     , binary
     , bytestring