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VERITAS, an array of imaging atmospheric-Cherenkov telescopes, studiesblazars in the energy range between ~100 GeV and ~30 TeV. With its excellentsensitivity at these energies, and ever-deepening source exposures, VERITAS isin a position to probe distant blazars for clear absorption signatures in theirvery-high-energy gamma-ray spectra due to interactions with the extragalacticbackground light (EBL). We discuss results from recent VERITAS observations ofPG 1553+113 (z > 0.4) which have resulted in the most significantvery-high-energy detection ever obtained for this source. The most recentVERITAS spectral measurements are used to place an upper limit on the sourceredshift of z < 0.5 at the 95% confidence level. Also discussed are theprospects of using these observations, along with those of other hard- spectrumblazars, to place constraints on the EBL.

VERITAS Observations of the BL Lac Object PG 1553+113 Between May 2010 and May 2011