The signature of the international agreement between French Centre National de la Recherche Scientifique (CNRS) and Spanish Instituto de Astrofísica de Canarias (IAC) for the renewal of the French-Spanish Laboratory for Astrophysics in Canarias (FSLAC) has been signed in July 2026. The convention is now published in the Spanish state official bulletin in September 2026. FSLAC is the international laboratory to which most THEMIS team personals are institutionally attached.

The agreement renews the existence of FSLAC for 5 years, from January 2026 to December 2030. In addition of the three existing thematic, among which solar physics, two new thematics have been added:
- Exoplanet research and their associated technological developments such as adaptive optics and high contrast imaging, for the development of the ExoLife telescope within the new LIOM laboratory at IACTEC,
- Galactic formation and evolution, to study the formation history and structure of the Milky Way in the context of the exploitation of the WEAVE instrument, a fiber-fed multi-object spectrograph on the William Herschel telescope in La Palma.