diff --git a/postgresql-types-algebra.cabal b/postgresql-types-algebra.cabal
--- a/postgresql-types-algebra.cabal
+++ b/postgresql-types-algebra.cabal
@@ -1,6 +1,6 @@
 cabal-version: 3.0
 name: postgresql-types-algebra
-version: 0.1
+version: 0.1.0.1
 category: PostgreSQL, Codecs
 synopsis: Type classes for PostgreSQL type mappings
 description:
@@ -102,7 +102,7 @@
     attoparsec >=0.14 && <0.19,
     base >=4.11 && <5,
     bytestring >=0.10 && <0.13,
-    ptr-peeker ^>=0.1,
+    ptr-peeker ^>=0.2,
     ptr-poker ^>=0.1.2.16,
     tagged ^>=0.8.9,
     text >=1.2 && <3,