The ratio of the
B
0
s
and
B
+
fragmentation fractions
f
s
and
f
u
is studied with
B
0
s
→
J
/
ψ
ϕ
and
B
+
→
J
/
ψ
K
+
decays using data collected by the LHCb experiment in proton-proton collisions at 7, 8, and 13 TeV center-of-mass energies. The analysis is performed in bins of
B
-meson momentum, longitudinal momentum, transverse momentum, pseudorapidity, and rapidity. The fragmentation-fraction ratio
f
s
/
f
u
is observed to depend on the
B
-meson transverse momentum with a significance of
6.0
σ
. This dependency is driven by the 13 TeV sample (
8.7
σ
), while the results for the other collision energies are not significant when considered separately. Furthermore, the results show a
4.8
σ
evidence for an increase of
f
s
/
f
u
as a function of collision energy.