Joint Filing Agreement

EXHIBIT A

Joint Filing Agreement

We, the undersigned, hereby express our agreement that the attached Schedule 13D is, and any further amendments thereto signed by each of the undersigned shall be, filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934.  This agreement may be terminated with respect to the obligations to jointly file future amendments to such statement on Schedule 13D as to any of the undersigned upon such person giving written notice thereof to each of the other persons signatory hereto, at the principal office thereof.

Dated: May 22, 2018

[Signature Page Follows]

	EQT GP HOLDINGS, LP
	By: EQT GP Services, LLC, its general partner
	By:	/s/ Xxxxxx X. XxXxxxx
	Name:	Xxxxxx X. XxXxxxx
	Title:	Senior Vice President and Chief Financial Officer
	EQT GP SERVICES, LLC
	By:	/s/ Xxxxxx X. XxXxxxx
	Name:	Xxxxxx X. XxXxxxx
	Title:	Senior Vice President and Chief Financial Officer
	EQT GATHERING HOLDINGS, LLC
	By:	/s/ Xxxxxxxx X. Xxxxxxxx III
	Name:	Xxxxxxxx X. Xxxxxxxx III
	Title:	President
	RICE MIDSTREAM HOLDINGS LLC
	By:	/s/ Xxxxxxxx X. Xxxxxxxx III
	Name:	Xxxxxxxx X. Xxxxxxxx III
	Title:	President
	RICE ENERGY OPERATING LLC
	By:	/s/ Xxxxx X. Xxxxxxxxx, Xx.
	Name:	Xxxxx X. Xxxxxxxxx Xx.
	Title:	President
	EQT RE, LLC
	By:	/s/ Xxxxx X. Xxxxxxxxx, Xx.
	Name:	Xxxxx X. Xxxxxxxxx, Xx.
	Title:	President
	EQT PRODUCTION COMPANY
	By:	/s/ Xxxxx X. Xxxxxxxxx, Xx.
	Name:	Xxxxx X. Xxxxxxxxx, Xx.
	Title:	President

Signature Page to Joint Filing Agreement for EQT Midstream Partners, LP

	EQT INVESTMENTS HOLDINGS, LLC
	By:	/s/ Xxxxxx X. Xxxxxx
	Name:	Xxxxxx X. Xxxxxx
	Title:	Vice President
	EQT CORPORATION
	By:	/s/ Xxxxxx X. XxXxxxx
	Name:	Xxxxxx X. XxXxxxx
	Title:	Senior Vice President and Chief Financial Officer

Signature Page to Joint Filing Agreement for EQT Midstream Partners, LP