Exception in Dapper.Contrib SqlMapperExtension during the Insert "Value was either too large or too small for an Int32"

Scenario:
When explicitly inserting long value in primary key non identity column getting exception as "Value was either too large or too small for an Int32"

Method:
During the insert, the intermittent value stored in int and later i.e. before returning the value its being converted to long.

long Insert<T>(this IDbConnection connection, T entityToInsert, IDbTransaction transaction = null, int? commandTimeout = null) where T : class

Please find the highlighted information.

Could somebody help me on this.

StackTrace:
at System.Decimal.ToInt32(Decimal d)
at System.Decimal.op_Explicit(Decimal value)
at System.Dynamic.UpdateDelegates.UpdateAndExecute1[T0,TRet](CallSite site, T0 arg0)
at SqlServerAdapter.Insert(IDbConnection connection, IDbTransaction transaction, Nullable1 commandTimeout, String tableName, String columnList, String parameterList, IEnumerable1 keyProperties, Object entityToInsert)
at Dapper.Contrib.Extensions.SqlMapperExtensions.Insert[T](IDbConnection connection, T entityToInsert, IDbTransaction transaction, Nullable`1 commandTimeout)

Start with Dapper.Contrib.Extensions.SqlMapperExtensions.Insert and the SqlServerAdapter.Insert entry points shown in the stack trace. Reproduce an insert using a long value in a non-identity primary key, then verify that the insert completes and returns the expected value without the Decimal.ToInt32 exception.