diff --git a/.circleci/config.yml b/.circleci/config.yml
index f82008e9b..0364e99fa 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -34,7 +34,7 @@ commands:
           condition: << parameters.linux >>
           steps:
             - run: sudo apt-get update
-            - run: sudo apt-get install ocl-icd-opencl-dev
+            - run: sudo apt-get install ocl-icd-opencl-dev libhwloc-dev
       - run: git submodule sync
       - run: git submodule update --init
   download-params:
diff --git a/extern/filecoin-ffi b/extern/filecoin-ffi
index f640612a1..0226d0be6 160000
--- a/extern/filecoin-ffi
+++ b/extern/filecoin-ffi
@@ -1 +1 @@
-Subproject commit f640612a1a1f7a2dd8b3a49e1531db0aa0f63447
+Subproject commit 0226d0be6f0ec441e687512cd833040414437351
diff --git a/go.sum b/go.sum
index f0ef4ea6b..3ced99135 100644
--- a/go.sum
+++ b/go.sum
@@ -1459,8 +1459,8 @@ github.com/whyrusleeping/timecache v0.0.0-20160911033111-cfcb2f1abfee/go.mod h1:
 github.com/whyrusleeping/yamux v1.1.5/go.mod h1:E8LnQQ8HKx5KD29HZFUwM1PxCOdPRzGwur1mcYhXcD8=
 github.com/x-cray/logrus-prefixed-formatter v0.5.2/go.mod h1:2duySbKsL6M18s5GU7VPsoEPHyzalCE06qoARUCeBBE=
 github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
-github.com/xlab/c-for-go v0.0.0-20200718154222-87b0065af829 h1:wb7xrDzfkLgPHsSEBm+VSx6aDdi64VtV0xvP0E6j8bk=
-github.com/xlab/c-for-go v0.0.0-20200718154222-87b0065af829/go.mod h1:h/1PEBwj7Ym/8kOuMWvO2ujZ6Lt+TMbySEXNhjjR87I=
+github.com/xlab/c-for-go v0.0.0-20201002084316-c134bfab968f h1:nMhj+x/m7ZQsHBz0L3gpytp0v6ogokdbrQDnhB8Kh7s=
+github.com/xlab/c-for-go v0.0.0-20201002084316-c134bfab968f/go.mod h1:h/1PEBwj7Ym/8kOuMWvO2ujZ6Lt+TMbySEXNhjjR87I=
 github.com/xlab/pkgconfig v0.0.0-20170226114623-cea12a0fd245 h1:Sw125DKxZhPUI4JLlWugkzsrlB50jR9v2khiD9FxuSo=
 github.com/xlab/pkgconfig v0.0.0-20170226114623-cea12a0fd245/go.mod h1:C+diUUz7pxhNY6KAoLgrTYARGWnt82zWTylZlxT92vk=
 github.com/xorcare/golden v0.6.0/go.mod h1:7T39/ZMvaSEZlBPoYfVFmsBLmUl3uz9IuzWj/U6FtvQ=