From left to right: CARMENES near-IR Doppler measurements time series of GJ 1148 and a phase-folded representation of the two planetary signals similar to that of Fig. 3. Due to its lower precision the near-IR data was not used in the data analysis, but is only overplotted with an optimized RV offset to the best two-planet dynamical model constructed from the optical data shown in Fig. 3. The CARMENES near-IR RVs are in an excellent agreement with the model from the available optical data, fully recovering the two planetary signals.