diff --git a/lib/plsql/jdbc_connection.rb b/lib/plsql/jdbc_connection.rb
index <HASH>..<HASH> 100644
--- a/lib/plsql/jdbc_connection.rb
+++ b/lib/plsql/jdbc_connection.rb
@@ -223,8 +223,6 @@ module PLSQL
     end
 
     RUBY_CLASS_TO_SQL_TYPE = {
-      Fixnum => java.sql.Types::INTEGER,
-      Bignum => java.sql.Types::INTEGER,
       Integer => java.sql.Types::INTEGER,
       Float => java.sql.Types::FLOAT,
       BigDecimal => java.sql.Types::NUMERIC,
Fixnum and Bignum are deprecated in Ruby <I>

This pull request addresses these warnings.
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