We present an updated thermodynamic database for aluminium alloys, TCAL5. The update highlights the assessment of many key binary and ternary systems that are relevant to the 8xxx series of aluminium alloys, including Al-Li, Al-Ce, Al-Sn, as well as Al-Ni and Al-Fe based alloy systems. It is worthwhile to mention that the δ’-Al3Li phase, which is an important metastable precipitate in Al-Li and Al-Cu-Li based alloys, is modelled by taking into experimental solvus data and theoretical values. Furthermore, the rare earth element, Er, was newly added and relevant systems were assessed within the resulting 35-element framework. Additionally, several Sc-containing systems were modelled, mainly in order to understand the substitution of less-expensive alloying elements (e.g. Ti and Zr) for Sc. Calculations and simulations are made as examples for demonstrating the capacity of the database in predicting the phase formation during solidification and heat treatments.