Quebec City, Quebec, April 24, 2005

The Department of National Defence of Canada has selected CGI Group Inc. (CGI)
(TSX: GIB.SV.A; NYSE: GIB) for a three-year contract valued at CDN$15 million
for the continued support of command and control operation tools as well as
software upgrades. This contract has the option of being extended for one-year.
CGI has delivered services to National Defence for over 15 years.

As
part of this contract, some 25 CGI professionals are working in the client’s Val
Cartier, Quebec-based research unit. The tools are based on NATO’s standards
which enable all allied countries to interface and share vital information. CGI
is responsible for the development of several applications based on these
standards.

The tools help the military plan and make decisions when in
defence and in peace keeping operations. This upgrade and continued support of
these tools is part of a federal initiative to provide Canadian Forces’
commanders with better access to information for planning, monitoring and
adapting activity in order to make decisions more efficiently and effectively.
Ultimately, the purpose of these tools is to use the information to save lives.

“We are pleased that through this engagement we can extend our long-term
partnership with National Defence. We have been able to demonstrate our ability
to bring incremental value to them as a result of our team of talented
professionals who have intimate knowledge of both their technical and business
requirements. We are dedicated to helping them grow in the most economical way
possible,” said Claude Marcoux, senior vice-president, Quebec City of CGI.

About CGI
Founded in 1976, CGI is among the largest
independent information technology and business process services firms in North
America. CGI and its affiliated companies employ approximately 25,000
professionals. CGI provides end-to-end IT and business process services to
clients worldwide from offices in Canada, the United States, Europe, Asia
Pacific as well as from centers of excellence in India and Canada. CGI’s
annualized revenue run rate is currently CDN$3.8 billion (US$3.0 billion) and at
December 31, 2004, CGI’s order backlog was CDN$13 billion (US$10.3 billion).
CGI’s shares are listed on the TSX (GIB.SV.A) and the NYSE (GIB) and are
included in the S&P/TSX Composite Index as well as the S&P/TSX Capped
Information Technology and MidCap Indices. Website: www.cgi.com.

Forward-Looking Statements
All
statements in this press release that do not directly and exclusively relate to
historical facts constitute “forward-looking statements” within the meaning of
that term in Section 27A of the United States Securities Act of 1933, as
amended, and Section 21E of the United States Securities Exchange Act of 1934,
as amended. These statements represent CGI Group Inc.’s intentions, plans,
expectations, and beliefs, and are subject to risks, uncertainties, and other
factors, of which many are beyond the control of the Company. These factors
could cause actual results to differ materially from such forward-looking
statements.

These factors include and are not restricted to the timing
and size of contracts, acquisitions and other corporate developments; the
ability to attract and retain qualified employees; market competition in the
rapidly-evolving information technology industry; general economic and business
conditions, foreign exchange and other risks identified in the Management’s
Discussion and Analysis (MD&A) in CGI Group Inc.’s Annual Report or Form
40-F filed with the SEC, the Company’s Annual Information Form filed with the
Canadian securities authorities, as well as assumptions regarding the foregoing.
The words “believe”, “estimate”, “expect”, “intend”, “anticipate”, “foresee”,
“plan”, and similar expressions and variations thereof, identify certain of such
forward-looking statements, which speak only as of the date on which they are
made. In particular, statements relating to future revenue from outsourcing
contracts are forward-looking statements. CGI disclaims any intention or
obligation to publicly update or revise any forward-looking statements, whether
as a result of new information, future events or otherwise. Readers are
cautioned not to place undue reliance on these forward-looking statements.

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For more information:

CGI:
Investor relations
Jane Watson
Vice-president, investor relations
(416) 945-3616

Ronald White
Director, investor relations
(514) 841-3230

Media relations
Eileen Murphy
Director, media relations
(514) 841-3430