diff --git a/Makefile b/Makefile
index d1c7a42a2..2d616b9ab 100644
--- a/Makefile
+++ b/Makefile
@@ -42,7 +42,7 @@ BUILD_DEPS+=build/.filecoin-install
 CLEAN+=build/.filecoin-install
 
 ffi-version-check:
-	@[[ "$$(awk '/const Version/{print $$5}' extern/filecoin-ffi/version.go)" -eq 1 ]] || (echo "FFI version mismatch, update submodules"; exit 1)
+	@[[ "$$(awk '/const Version/{print $$5}' extern/filecoin-ffi/version.go)" -eq 2 ]] || (echo "FFI version mismatch, update submodules"; exit 1)
 BUILD_DEPS+=ffi-version-check
 
 .PHONY: ffi-version-check
diff --git a/extern/filecoin-ffi b/extern/filecoin-ffi
index 62f89f108..951d66ae9 160000
--- a/extern/filecoin-ffi
+++ b/extern/filecoin-ffi
@@ -1 +1 @@
-Subproject commit 62f89f108a6a8fe9ad6ed52fb7ffbf8594d7ae5c
+Subproject commit 951d66ae93f6f4d3e26fee8c9320333c410f8bd1