Exhibit 13.2





Certification Pursuant to

18 U.S.C.  Section 1350,

as Adopted Pursuant to

Section 906 of the Sarbanes-Oxley Act
2002



In connection with
the Annual Report on Form 40-F/A of Sierra Metals Inc. (the “Company”) for the yearly period ended December 31, 2019,
as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Igor Gonzalez, President
and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002, that, to the best of my knowledge:



| | (1) | The Report fully complies with the requirements of Section
13(a) or 15(d) of the Securities Exchange Act of 1934; and
| | --- | ---------------------------------------------------------------------------------------------------------------------



| | (2) | The information contained in the Report fairly presents,
in all material respects, the financial condition and results of operations of the Company.
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------



/s/ Igor Gonzalez

Name:	Igor Gonzalez

Title:	  President and Chief Executive
Officer

Date:	  April 1, 2020



The foregoing certificate
is solely for the purposes of compliance with the aforementioned Section 906 of the Sarbanes-Oxley Act 2002 and is not intended
to be used or relied upon for any other purposes.



A signed original of
this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished
to the SEC or its staff upon request.













Certification Pursuant to

18 U.S.C.  Section 1350,

as Adopted Pursuant to

Section 906 of the Sarbanes-Oxley Act
2002



In connection with
the Annual Report on Form 40-F/A of Sierra Metals Inc. (the “Company”) for the yearly period ended December 31, 2019,
as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Ed Guimaraes, Chief Financial
Officer of the Company, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act
of 2002, that, to the best of my knowledge:



| | (1) | The Report fully complies with the requirements of Section
13(a) or 15(d) of the Securities Exchange Act of 1934; and
| | --- | ---------------------------------------------------------------------------------------------------------------------



| | (2) | The information contained in the Report fairly presents,
in all material respects, the financial condition and results of operations of the Company.
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------



/s/ Ed Guimaraes

Name:	Ed Guimaraes

Title:	  Chief Financial Officer

Date:	  April 1, 2020



The foregoing certificate
is solely for the purposes of compliance with the aforementioned Section 906 of the Sarbanes-Oxley Act 2002 and is not intended
to be used or relied upon for any other purposes.



A signed original of
this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished
to the SEC or its staff upon request.