Appendix A Index Series

Exhibit 99.(g.5)

Custodian Agreement

Appendix A

Index Series

iShares Xxxxx & Steers Realty Majors Index Fund

iShares Dow Xxxxx Select Dividend Index Fund

iShares Dow Xxxxx Transportation Average Index Fund

iShares Dow Xxxxx U.S. Aerospace & Defense Index Fund

iShares Dow Xxxxx U.S. Basic Materials Sector Index Fund

iShares Dow Xxxxx U.S. Broker-Dealers Index Fund

iShares Dow Xxxxx U.S. Consumer Goods Sector Index Fund

iShares Dow Xxxxx U.S. Consumer Services Sector Index Fund

iShares Dow Xxxxx U.S. Energy Sector Index Fund

iShares Dow Xxxxx U.S. Financial Sector Index Fund

iShares Dow Xxxxx U.S. Financial Services Index Fund

iShares Dow Xxxxx U.S. Healthcare Providers Index Fund

iShares Dow Xxxxx U.S. Healthcare Sector Index Fund

iShares Dow Xxxxx U.S. Home Construction Index Fund

iShares Dow Xxxxx U.S. Industrial Sector Index Fund

iShares Dow Xxxxx U.S. Insurance Index Fund

iShares Dow Xxxxx U.S. Medical Devices Index Fund

iShares Dow Xxxxx U.S. Oil & Gas Exploration & Production Index Fund

iShares Dow Xxxxx U.S. Oil Equipment & Services Index Fund

iShares Dow Xxxxx U.S. Pharmaceuticals Index Fund

iShares Dow Xxxxx U.S. Real Estate Index Fund

iShares Dow Xxxxx U.S. Regional Banks Index Fund

iShares Dow Xxxxx U.S. Technology Sector Index Fund

iShares Dow Xxxxx U.S. Telecommunications Sector Index Fund

iShares Dow Xxxxx U.S. Total Market Index Fund

iShares Dow Xxxxx U.S. Utilities Sector Index Fund

iShares FTSE/Xinhua China 25 Index Fund

iShares Xxxxxxx Sachs Natural Resources Index Fund

iShares Xxxxxxx Xxxxx Networking Index Fund

iShares Xxxxxxx Sachs Semiconductor Index Fund

iShares Xxxxxxx Xxxxx Software Index Fund

iShares Xxxxxxx Sachs Technology Index Fund

iShares GS $ InvesTop^TM Corporate Bond Fund

iShares KLD Select Social^SM Index Fund

iShares Xxxxxx 1-3 Year Treasury Bond Fund

iShares Xxxxxx 20+ Year Treasury Bond Fund

iShares Xxxxxx 7-10 Year Treasury Bond Fund

iShares Xxxxxx Aggregate Bond Fund

iShares Xxxxxx TIPS Bond Fund

iShares Morningstar Large Core Index Fund

iShares Morningstar Large Growth Index Fund

iShares Morningstar Large Value Index Fund

iShares Morningstar Mid Core Index Fund

Custodian Agreement

Appendix A (continued)

Index Series

iShares Morningstar Mid Growth Index Fund

iShares Morningstar Mid Value Index Fund

iShares Morningstar Small Core Index Fund

iShares Morningstar Small Growth Index Fund

iShares Morningstar Small Value Index Fund

iShares MSCI EAFE Growth Index Fund

iShares MSCI EAFE Index Fund

iShares MSCI EAFE Value Index Fund

iShares Nasdaq Biotechnology Index Fund

iShares NYSE 100 Index Fund

iShares NYSE Composite Index Fund

iShares Xxxxxxx 1000 Growth Index Fund

iShares Xxxxxxx 1000 Index Fund

iShares Xxxxxxx 1000 Value Index Fund

iShares Xxxxxxx 2000 Growth Index Fund

iShares Xxxxxxx 2000 Index Fund

iShares Xxxxxxx 2000 Value Index Fund

iShares Xxxxxxx 3000 Growth Index Fund

iShares Xxxxxxx 3000 Index Fund

iShares Xxxxxxx 3000 Value Index Fund

iShares Xxxxxxx Microcap^TM Index Fund

iShares Xxxxxxx Midcap Growth Index Fund

iShares Xxxxxxx Xxxxxx Index Fund

iShares Xxxxxxx Midcap Value Index Fund

iShares S&P 100 Index Fund

iShares S&P 1500 Index Fund

iShares S&P 500 Growth Index Fund

iShares S&P 500 Index Fund

iShares S&P 500 Value Index Fund

iShares S&P Europe 350 Index Fund

iShares S&P Global 100 Index Fund

iShares S&P Global Energy Sector Index Fund

iShares S&P Global Financials Sector Index Fund

iShares S&P Global Healthcare Sector Index Fund

iShares S&P Global Technology Sector Index Fund

iShares S&P Global Telecommunications Services Sector Index Fund

iShares S&P Latin America 40 Index Fund

iShares S&P MidCap 400 Growth Index Fund

iShares S&P MidCap 400 Index Fund

iShares S&P MidCap 400 Value Index Fund

iShares S&P SmallCap 600 Growth Index Fund

iShares S&P SmallCap 600 Index Fund

iShares S&P SmallCap 600 Value Index Fund

iShares S&P/TOPIX 150 Index Fund

Amended and Approved by the Board of Trustees of iShares Trust on June 15, 2006.