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Let $G$ be a finite group, $A$ a unital separable finite simple nuclearC*-algebra, and $\alpha$ an action of $G$ on $A$. Assume that $A$ absorbs theJiang-Su algebra $\mathcal{Z}$, the extremal boundary of the trace space of $A$is compact and finite dimensional and that $\alpha$ fixes any tracial state of$A$. Then tsr$(A \rtimes_\alpha G) = 1$. In particular, when $A$ has a uniquetracial state, we conclude it without above conditons on a tracial state spaceof $A$.

Stable rank for crossed products by actions of finite groups on C*-algebras