diff --git a/rebar.config b/rebar.config
index 4fb0352..bdc8fe4 100644
--- a/rebar.config
+++ b/rebar.config
@@ -20,7 +20,7 @@
 
 {deps, [
     lager,
-    {blockchain, {git, "https://github.com/helium/blockchain-core.git", {branch, "andymck/poc-grpc-v2-plus-vals-as-chall"}}},
+    {blockchain, {git, "https://github.com/helium/blockchain-core.git", {branch, "andymck/poc-grpc-v2"}}},
     {grpcbox, {git, "https://github.com/andymck/grpcbox.git", {branch, "andymck/ts-master/stream-handler-changes"}}}
 ]}.
 
diff --git a/rebar.lock b/rebar.lock
index 70cb1c5..5055e1c 100644
--- a/rebar.lock
+++ b/rebar.lock
@@ -5,7 +5,7 @@
  {<<"base64url">>,{pkg,<<"base64url">>,<<"1.0.1">>},1},
  {<<"blockchain">>,
   {git,"https://github.com/helium/blockchain-core.git",
-       {ref,"944fd663502e10bc631248918d3d8e32b9397b61"}},
+       {ref,"14e30b5e7f298e37ff51ff10ea45df749625833a"}},
   0},
  {<<"certifi">>,{pkg,<<"certifi">>,<<"2.8.0">>},2},
  {<<"chatterbox">>,
@@ -78,7 +78,7 @@
  {<<"hackney">>,{pkg,<<"hackney">>,<<"1.18.0">>},1},
  {<<"helium_proto">>,
   {git,"https://github.com/helium/proto.git",
-       {ref,"5e663437950c3e6d71fbd230e1435005be26603f"}},
+       {ref,"9ac2d99e591bb929219dbcadc0cd7e2a49d23526"}},
   1},
  {<<"hpack">>,{pkg,<<"hpack_erl">>,<<"0.2.3">>},2},
  {<<"idna">>,{pkg,<<"idna">>,<<"6.1.1">>},2},