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We present the validation of two planets orbiting M dwarfs, TOI-1696b andTOI-2136b. Both planets are mini-Neptunes orbiting nearby stars, making thempromising prospects for atmospheric characterization with the James Webb SpaceTelescope. We validated the planetary nature of both candidates using highcontrast imaging, ground-based photometry, and near-infrared radial velocities.Adaptive Optics images were taken using the ShARCS camera on the 3 m ShaneTelescope. Speckle images were taken using the NN-Explore Exoplanet StellarSpeckle Imager on the WIYN 3.5 m telescope. Radii and orbital ephemerides wererefined using a combination of TESS, the diffuser-assisted ARCTIC imager on the3.5m ARC telescope at Apache Point Observatory, and the 0.6 m telescope at RedButtes Observatory. We obtained radial velocities using the Habitable-ZonePlanet Finder on the 10 m Hobby-Eberly Telescope, which enabled us to placeupper limits on the masses of both transiting planets. TOI-1696b (P = 2.5 days;R$_{p}$ = 3.24 R$_{\oplus}$; M$_{p}$ $<$ 56.6 M$_{\oplus}$) falls into asparsely-populated region of parameter space considering its host star'stemperature (T$_{\rm{eff}}$ = 3168 K, M4.5), as planets of its size are quiterare around mid to late M dwarfs. On the other hand, TOI-2136b (P = 7.85 days;R$_{p}$ = 2.09 R$_{\oplus}$; M$_{p}$ $<$ 15.0 M$_{\oplus}$) is an excellentcandidate for atmospheric follow-up with JWST.

TOI-1696 and TOI-2136: Constraining the Masses of Two Mini-Neptunes with HPF