diff --git a/.circleci/config.yml b/.circleci/config.yml
index 3f8711875..51fcf2bae 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -237,7 +237,7 @@ jobs:
     resource_class: xlarge
     steps:
       - checkout # check out the code in the project directory
-      - run: sudo apt-get update -y && sudo apt-get install -y clang libgflags-dev
+      - run: sudo apt-get update -y && sudo apt-get install -y clang libgflags-dev libtbb-dev
       - run: CC=clang CXX=clang++ USE_CLANG=1 PORTABLE=1 make V=1 -j16 all | .circleci/cat_ignore_eagain
       - post-steps
 
diff --git a/cache/clock_cache.cc b/cache/clock_cache.cc
index 26287ff22..bca52493a 100644
--- a/cache/clock_cache.cc
+++ b/cache/clock_cache.cc
@@ -431,7 +431,7 @@ void ClockCacheShard::ApplyToSomeEntries(
     // Mark finished with all
     *state = UINT32_MAX;
   } else {
-    *state = end_idx;
+    *state = static_cast<uint32_t>(end_idx);
   }
 
   // Do the iteration