Lemma 15.74.9. Let $A \to B$ be a ring map. Let $K^\bullet $ be a perfect complex of $A$-modules. Then $K^\bullet \otimes _ A^{\mathbf{L}} B$ is a perfect complex of $B$-modules.

**Proof.**
Using Lemma 15.74.2 this translates into the corresponding results for pseudo-coherent modules and modules of finite tor dimension. See Lemma 15.66.13 and Lemma 15.64.12 for those results.
$\square$

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