diff --git a/coq-iris.opam b/coq-iris.opam
index ea197dc71c1d0c343651f13087c2ae6826a2ae9a..e88b356234bad02662b59719aeb69767c47cae22 100644
--- a/coq-iris.opam
+++ b/coq-iris.opam
@@ -28,7 +28,7 @@ tags: [
 
 depends: [
   "coq" { (>= "8.16" & < "8.19~") | (= "dev") }
-  "coq-stdpp" { (= "dev.2023-09-14.0.4ff443de") | (= "dev") }
+  "coq-stdpp" { (= "dev.2023-09-21.2.7f6df4fa") | (= "dev") }
 ]
 
 build: ["./make-package" "iris" "-j%{jobs}%"]
diff --git a/iris/algebra/big_op.v b/iris/algebra/big_op.v
index bf135d11acbd5004f0f864517ede4552142c5934..98b6366c7d027608b365eb23dac7ff70a0073269 100644
--- a/iris/algebra/big_op.v
+++ b/iris/algebra/big_op.v
@@ -444,7 +444,7 @@ Section gmap.
     { by rewrite map_filter_empty !big_opM_empty. }
     destruct (decide (φ (k, v))).
     - rewrite map_filter_insert_True //.
-      assert (filter φ m !! k = None) by (apply map_filter_lookup_None; eauto).
+      assert (filter φ m !! k = None) by (apply map_lookup_filter_None; eauto).
       by rewrite !big_opM_insert // decide_True // IH.
     - rewrite map_filter_insert_not' //; last by congruence.
       rewrite !big_opM_insert // decide_False // IH. by rewrite left_id.