diff --git a/coq-lambda-rust.opam b/coq-lambda-rust.opam
index c2ddd04eaabd0e3952c2030bdebd41a96ecb15f6..d9d81aeb939ab528211dc733ab63e93d8aa3eebf 100644
--- a/coq-lambda-rust.opam
+++ b/coq-lambda-rust.opam
@@ -15,7 +15,7 @@ This branch uses a proper weak memory model.
 """
 
 depends: [
-  "coq-gpfsl" { (= "dev.2021-09-01.0.3b7fcbfe") | (= "dev") }
+  "coq-gpfsl" { (= "dev.2021-09-07.0.7adc00e0") | (= "dev") }
 ]
 
 build: [make "-j%{jobs}%"]