  We present an update of our determination of the strong coupling alpha_s from
the quantum chromodynamics static energy. This updated analysis includes new
lattice data, at smaller lattice spacings and reaching shorter distances, the
use of better suited perturbative expressions to compare with data in a wider
distance range, and a comprehensive and detailed estimate of the error sources
that contribute to the uncertainty of the final result. Our updated value for
alpha_s at the Z-mass scale, M_Z, is alpha_s(M_Z)=0.1166^{+0.0012}_{-0.0008},
which supersedes our previous result.
