diff --git a/dagger/stores/blockstore.nim b/dagger/stores/blockstore.nim
index baa3fd19..8e887439 100644
--- a/dagger/stores/blockstore.nim
+++ b/dagger/stores/blockstore.nim
@@ -7,7 +7,6 @@
 ## This file may not be copied, modified, or distributed except according to
 ## those terms.
 
-import std/sets
 import std/sequtils
 import chronos
 import ../blocktype
@@ -51,6 +50,8 @@ proc triggerChange(
   for handler in s.changeHandlers[changeType]:
     handler(evt)
 
+{.push locks:"unknown".}
+
 method getBlocks*(b: BlockStore, cid: seq[Cid]): Future[seq[Block]] {.base.} =
   ## Get a block from the stores
   ##
@@ -75,5 +76,7 @@ method delBlocks*(s: BlockStore, blocks: seq[Cid]) {.base.} =
 
   s.triggerChange(ChangeType.Removed, blocks)
 
+{.pop.}
+
 proc contains*(s: BlockStore, blk: Cid): bool =
   s.hasBlock(blk)
diff --git a/tests/dagger/bitswap/testbitswap.nim b/tests/dagger/bitswap/testbitswap.nim
index ae3a41b5..72709608 100644
--- a/tests/dagger/bitswap/testbitswap.nim
+++ b/tests/dagger/bitswap/testbitswap.nim
@@ -1,5 +1,3 @@
-
-import std/sets
 import std/sequtils
 import std/algorithm
 
diff --git a/tests/dagger/testasyncheapqueue.nim b/tests/dagger/testasyncheapqueue.nim
index e5086191..9e2230e9 100644
--- a/tests/dagger/testasyncheapqueue.nim
+++ b/tests/dagger/testasyncheapqueue.nim
@@ -145,7 +145,7 @@ suite "asynchronous tests":
       for item in data:
         await push(heap, item)
 
-    asyncCheck pushTask()
+    asyncSpawn pushTask()
 
     check heap.len == 5
     check heap[0] == 1 # because we haven't pushed 0 yet