diff --git a/relational-schemas.cabal b/relational-schemas.cabal
--- a/relational-schemas.cabal
+++ b/relational-schemas.cabal
@@ -1,5 +1,5 @@
 name:                relational-schemas
-version:             0.1.1.0
+version:             0.1.2.0
 synopsis:            RDBMSs' schema templates for relational-query
 description:         This package contains some RDBMSs' schema structure definitions.
                      Supported RDBMS schemas are below:
diff --git a/src/Database/Relational/Schema/PostgreSQL.hs b/src/Database/Relational/Schema/PostgreSQL.hs
--- a/src/Database/Relational/Schema/PostgreSQL.hs
+++ b/src/Database/Relational/Schema/PostgreSQL.hs
@@ -148,6 +148,7 @@
 
   wheres $ typ ! Type.typcategory' `in'` values [ 'B' -- Boolean types
                                                 , 'D' -- Date/time types
+                                                , 'I' -- Network Address types
                                                 , 'N' -- Numeric types
                                                 , 'S' -- String types
                                                 , 'T' -- typespan types