diff --git a/extern/filecoin-ffi b/extern/filecoin-ffi
index 5f9f082b0..941bf0917 160000
--- a/extern/filecoin-ffi
+++ b/extern/filecoin-ffi
@@ -1 +1 @@
-Subproject commit 5f9f082b03a22bbf0f31adcb2bdf7f539cee6b6b
+Subproject commit 941bf0917e155dc9a5886e0508e4f900039df9dc
diff --git a/go.mod b/go.mod
index 4eb8e0844..98e9d3691 100644
--- a/go.mod
+++ b/go.mod
@@ -47,7 +47,7 @@ require (
 	github.com/filecoin-project/specs-actors/v2 v2.3.5-0.20210114162132-5b58b773f4fb
 	github.com/filecoin-project/specs-actors/v3 v3.1.0
 	github.com/filecoin-project/specs-actors/v4 v4.0.0
-	github.com/filecoin-project/specs-actors/v5 v5.0.0-20210512015452-4fe3889fff57
+	github.com/filecoin-project/specs-actors/v5 v5.0.0-20210517165532-c7cff61d07fb
 	github.com/filecoin-project/specs-storage v0.1.1-0.20201105051918-5188d9774506
 	github.com/filecoin-project/test-vectors/schema v0.0.5
 	github.com/gbrlsnchs/jwt/v3 v3.0.0-beta.1
diff --git a/go.sum b/go.sum
index a84e2e471..1c811efb6 100644
--- a/go.sum
+++ b/go.sum
@@ -318,8 +318,8 @@ github.com/filecoin-project/specs-actors/v3 v3.1.0 h1:s4qiPw8pgypqBGAy853u/zdZJ7
 github.com/filecoin-project/specs-actors/v3 v3.1.0/go.mod h1:mpynccOLlIRy0QnR008BwYBwT9fen+sPR13MA1VmMww=
 github.com/filecoin-project/specs-actors/v4 v4.0.0 h1:vMALksY5G3J5rj3q9rbcyB+f4Tk1xrLqSgdB3jOok4s=
 github.com/filecoin-project/specs-actors/v4 v4.0.0/go.mod h1:TkHXf/l7Wyw4ZejyXIPS2rK8bBO0rdwhTZyQQgaglng=
-github.com/filecoin-project/specs-actors/v5 v5.0.0-20210512015452-4fe3889fff57 h1:N6IBsnGXfAMXd677G6EiOKewFwQ7Ulcuupi4U6wYmXE=
-github.com/filecoin-project/specs-actors/v5 v5.0.0-20210512015452-4fe3889fff57/go.mod h1:283yBMMUSDB2abcjP/hhrwTkhb9h3sfM6KGrep/ZlBI=
+github.com/filecoin-project/specs-actors/v5 v5.0.0-20210517165532-c7cff61d07fb h1:818gGdeEC+7aHGl2X7ptdtYuqoEgRsY3jwz+DvUYUFk=
+github.com/filecoin-project/specs-actors/v5 v5.0.0-20210517165532-c7cff61d07fb/go.mod h1:283yBMMUSDB2abcjP/hhrwTkhb9h3sfM6KGrep/ZlBI=
 github.com/filecoin-project/specs-storage v0.1.1-0.20201105051918-5188d9774506 h1:Ur/l2+6qN+lQiqjozWWc5p9UDaAMDZKTlDS98oRnlIw=
 github.com/filecoin-project/specs-storage v0.1.1-0.20201105051918-5188d9774506/go.mod h1:nJRRM7Aa9XVvygr3W9k6xGF46RWzr2zxF/iGoAIfA/g=
 github.com/filecoin-project/test-vectors/schema v0.0.5 h1:w3zHQhzM4pYxJDl21avXjOKBLF8egrvwUwjpT8TquDg=