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Very high energy (VHE, energy >~ 100 GeV) {\gamma}-rays undergo pairproduction with photons of the extragalactic background light (EBL). Thus, theintrinsic {\gamma}-ray flux of cosmological sources is attenuated and theUniverse should be opaque to {\gamma}-rays above a redshift dependent energy.Recently, an indication has been found that the Universe is more transparentthan predicted by a lower-limit EBL model. Here, this indication is confrontedwith additional VHE {\gamma}-ray spectra and different EBL models. Depending onthe model for the opacity, the indication persist between a ~2.6 {\sigma} and~4.3 {\sigma} confidence level.

Revisiting the Indication for a low opacity Universe for very high energy gamma-rays