UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

[Rule 13d-101]

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT

TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT

TO RULE § 240.13d-2(a)

(Amendment No. 8)

Mediware Information Systems, Inc.

(Name of Issuer)

Common Stock, par value $0.10 per share

(Title of Class of Securities)

584946107

(CUSIP Number)

John Billowits

20 Adelaide Street East, Suite 1200

Toronto, ON M5C 2T6

(416) 861-0630

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

February 9, 2012

(Date of Event Which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box.  ¨

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7(b) for other parties to whom copies are to be sent.

(Continued on following pages)

This Amendment No. 8 (“Amendment No. 8”) amends the statement on Schedule 13D initially filed on April 15, 2008 (the “Original Filing”) by Constellation Software Inc. (“Constellation”), as amended by Amendment No. 1 filed on May 21, 2008 (“Amendment No. 1”), as amended by Amendment No. 2 filed on November 14, 2008 (“Amendment No. 2”), as amended by Amendment No. 3 filed on August 24, 2009 (“Amendment No. 3”), as amended by Amendment No. 4 filed on July 16, 2010 (“Amendment No. 4), as amended by Amendment No. 5 filed on March 11, 2011 (“Amendment No. 5”), as amended by Amendment No. 6 filed on September 19, 2011 (“Amendment No. 6”) as amended by Amendment No. 7 filed on January 20, 2012 (together, with the Original Filing, Amendment No. 1, Amendment No. 2, Amendment No. 3, Amendment No. 4, Amendment No. 5, and Amendment No. 6 ,the “Previous Filings”) with respect to common stock, $.10 par value (the “Shares”), of Mediware Information Systems, Inc. (the “Issuer”). Capitalized terms used and not defined in this Amendment No. 8 have the meanings set forth in the Previous Filings. This Amendment No. 8 is being made to disclose the disposition of additional securities of the Issuer by Constellation. As reported in the Previous Filings, Dexter Salna, President of the Homebuilder Operating Group, a wholly-owned subsidiary of Constellation, beneficially owns 700 Shares of the Issuer. As his beneficial ownership has not changed, he is not a “Reporting Person” for the purposes of this Amendment No. 8. Except as otherwise set forth herein, this Amendment No. 8 does not modify any of the information previously reported by Constellation in the Previous Filings.

ITEM 1. Security and Issuer.

Not Applicable.

ITEM 2. Identity and Background.

Item 2 of the Previous Filings is hereby amended as follows:

Appendix A, Appendix B, Appendix C and Appendix D referenced in Item 2 are hereby amended and restated in their entirety as reflected below.

ITEM 3. Source and Amount of Funds or Other Consideration.

Not Applicable.

ITEM 4. Purpose of Transaction.

Not Applicable.

ITEM 5. Interest in Securities of the Issuer.

Item 5 of the Previous Filings is hereby amended and restated in its entirety as follows:

(a)-(b) The Shares that may be deemed beneficially owned by the Reporting Persons for purposes of Section 13(d) of the Securities Exchange Act of 1934 is 1,543,712, which represents 18.9% of the outstanding Shares. This percentage is based upon 8,189,000 Shares outstanding as of February 2, 2012 as listed in the Issuer’s Quarterly Report on Form 10-Q for the quarterly period ended December 31, 2011. Constellation has shared power to control the vote of 1,543,712 Shares and shared power to dispose of 1,224,380 Shares. Mark Leonard has shared power to control the vote of 1,543,712 Shares and shared power to dispose of 1,224,380 Shares and sole power to dispose of 318,632 Shares. Dexter Salna has shared power to control the vote of 700 Shares and sole power to dispose of 700 Shares. The Reporting Persons specifically disclaim beneficial ownership in the Shares reported herein except to the extent of their pecuniary interest therein.

Other than as set forth herein, to the knowledge of Constellation, without specific inquiry, none of Constellation’s executive officers listed herein, directors listed on Appendix A, OMERS, OMERS Holdings, Birch Hill Equity, Birch Hill Holdings or any of the individuals set out in Appendix B, Appendix C or Appendix D holds Shares of the Issuer. The directors, executive officers and controlling parties of Constellation may be deemed to beneficially own Shares held by Constellation but disclaim any beneficial ownership except to the extent of any pecuniary interest therein.

ITEM 6. Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer.

Not Applicable.

ITEM 7. Material to be Filed as Exhibits.

The following documents are filed as Exhibits to this statement:

Exhibit A Joint Filing Agreement, dated February 16, 2012, by and between Constellation and Mark Leonard.

SIGNATURES

After reasonable inquiry and to the best of the knowledge and belief of the undersigned, the undersigned certifies that the information set forth in this statement is true, complete and correct.

EXHIBIT A

JOINT FILING AGREEMENT

Pursuant to Rule 13d-1(k), promulgated under the Securities Exchange Act of 1934, the undersigned persons hereby agree to file with the Securities and Exchange Commission this Statement on Schedule 13D (the “Statement”) to which this Joint Filing Agreement (the “Agreement”) is attached as an exhibit and any future amendments thereto, and agree that such Statement is filed on behalf of each of them.

IN WITNESS WHEREOF, the undersigned have executed this Agreement.

Dated: February 16, 2012

APPENDIX A

PRINCIPAL BUSINESS ADDRESSES AND PRINCIPAL OCCUPATIONS OF DIRECTORS OF

CONSTELLATION

Directors:

Michael Mazan

Partner

Birch Hill Equity Partners Management Inc.

100 Wellington St West

PO Box 22

Suite 2300

Toronto, Ontario M5K 1A1

Canada

Citizenship: Canadian

Tim Patterson

Managing Director

OMERS Private Equity Inc.

Royal Bank Plaza,

South Tower,

200 Bay street, Suite 2010,

Box 6, Toronto, Ontario M5J 2J2

Canada

Citizenship: Canadian

Brian Aune

Private Investor

6505 3rd Avenue

Unit 325

Delta, British Columbia V4L 2N1

Canada

Citizenship: Canadian

Ian McKinnon

Consultant

63 Fairfield Drive

Toronto Ontario M4P 1S9

Canada

Citizenship: Canadian

Stephen J. Dent

Chair

Birch Hill Equity Partners Management Inc.

100 Wellington St West

PO Box 22

Suite 2300

Toronto, Ontario M5K 1A1

Canada

Citizenship: Canadian

Paul G. Renaud

President

OMERS Private Equity Inc.

Royal Bank Plaza,

South Tower,

200 Bay street, Suite 2010,

Box 6, Toronto, Ontario M5J 2J2

Canada

Citizenship: Canadian

Stephen Scotchmer

Private Investor

77 King Street West

Suite 3710, PO Box 342

Toronto Dominion Centre

Toronto, ON M5K 1K7

Canada

Citizenship: Canadian

Mark Leonard

President and Chairman of the Board

Constellation Software Inc.

20 Adelaide St. East

Suite 1200

Toronto Ontario, M5C 2T6

Canada

Citizenship: Canadian

APPENDIX B

INFORMATION REGARDING OMERS HOLDINGS,

ITS DIRECTORS AND EXECUTIVE OFFICERS

Principal Business: Investment Holding Company Principal Address: OMERS Private Equity, Royal Bank Plaza, South Tower, Suite 2010, 200 Bay Street, P.O. Box 6, Toronto, Ontario M5J 2J2 Canada

Directors:

The principal business address of the directors is: c/o OMERS Private Equity, Royal Bank Plaza, South Tower, Suite 2010, 200 Bay Street, P.O. Box 6, Toronto, Ontario M5J 2J2 Canada

Paul G. Renaud

Citizenship: Canadian

Lisa Melchior

Citizenship: Canadian

Officers:

The principal business address of the following officers, unless otherwise indicated, is c/o OMERS Private Equity, (as above).

INFORMATION REGARDING OMERS,

ITS DIRECTORS AND EXECUTIVE OFFICERS

Principal Business: Provider of pension services

Principal Address: OMERS Administration Corporation, 8th Floor, One University Avenue, Toronto, ON M5J 2P1 Canada.

Directors:

R. Monty Baker

2053 Hadfield Court

Burlington, ON L7M 3V5

Canada

Citizenship: Canadian

Frederick Biro

Regional Municipality of Peel Police Services Board

10 Peel Centre Drive

Brampton, ON L6T 4B9

Canada

Citizenship: Canadian

David Carrington

22 Baybrook Crescent

Scarborough, ON M1H 2R6

Canada

Citizenship: Canadian

Richard Faber

9962 Pinetree Crescent

Grand Bend ON N0M 1T0

Canada

Citizenship: Dutch

Rick Miller

776 Lake Trail Drive

Windsor ON N9G 2M9

Canada

Citizenship: Canadian

David O’Brien

1837 Snow Bunting Court

Mississauga, ON L5L 2Y8

Canada

Citizenship: Canadian

William E. Aziz

Hollinger Inc.

100 King Street West, Suite 3700

Toronto ON M5X 1C9

Canada

Citizenship: Canadian

Sheila Vandenberk

15 Fenwick Crescent

Unionville ON L3R 4H6

Canada

Citizenship: Canadian

John Sabo

York Catholic District School Board

320 Bloomington Road West

Aurora ON L4G 3G8

Canada

Citizenship: Canadian

Eugene Swimmer

School of Public Policy and Admin

Carleton University, Room 1001, Dunton Tower

1125 Colonel By Drive

Ottawa ON K1S 5B6

Canada

Citizenship: Canadian

Robert John Weatherup

17 Elvin Avenue

Toronto ON M6N 4J1

Canada

Citizenship: Canadian

Laurie Nancekivell

56 Sundridge Court

London ON N5Z 4R5

Canada

Citizenship: Canadian

F. Leslie Thompson

123 Major Street

Toronto ON M5S 2K9

Canada

Citizenship: Canadian

James Phillips

226 Old Country Place

Kitchener ON N2E 3A4

Canada

Citizenship: Canadian

Executive Officers:

The principal business address of the following executive officers, unless otherwise indicated, is c/o OMERS Administration Corporation, 8th Floor, One University Avenue, Toronto, ON M5J 2P1 Canada. The citizenship of all officers listed is Canadian.

APPENDIX C

INFORMATION REGARDING BIRCH HILL EQUITY,

ITS DIRECTORS AND EXECUTIVE OFFICERS

Principal Business: General Partner (for Private Equity Fund)

Principal Address: Birch Hill Equity Partners Management Inc., 100 Wellington Street West, 23rd Floor, PO Box 22, Toronto, ON M5K 1A1 Canada

Directors:

Stephen J. Dent

Chair

Birch Hill Equity Partners Management Inc.

100 Wellington Street West

PO Box 22, Suite 2300

Toronto, ON M5K 1A1

Canada

Citizenship: Canadian

John B. MacIntyre

President

Birch Hill Equity Partners Management Inc.

100 Wellington Street West

PO Box 22, Suite 2300

Toronto, ON M5K 1A1

Canada

Citizenship: Canadian

David Samuel

Executive Vice President

100 Wellington Street West

PO Box 22, Suite 2300

Toronto, ON M5K 1A1

Canada

Citizenship: Canadian

Michael J. Salamon

Senior Vice President

100 Wellington Street West

PO Box 22, Suite 2300

Toronto, ON M5K 1A1

Canada

Citizenship: Canadian

Executive Officers:

The principal business address of the following executive officers is c/o Birch Hill Equity Partners Management Inc. (as above). The citizenship of all officers is Canadian.

APPENDIX D

INFORMATION REGARDING BIRCH HILL HOLDINGS,

ITS DIRECTORS AND EXECUTIVE OFFICERS

Principal Business: Holding Company

Principal Address: Birch Hill Equity Partners Management Inc., 100 Wellington Street West, 23 rd Floor, Toronto, ON M5K 1A1

Directors:

Executive Officers:

The principal business address of the following executive officers is c/o Birch Hill Equity Partners Management Inc. (as above). The citizenship of all officers is Canadian.