diff --git a/examples/hello_world/CMakeLists.txt b/examples/hello_world/CMakeLists.txt
index be9a108..2f5d648 100644
--- a/examples/hello_world/CMakeLists.txt
+++ b/examples/hello_world/CMakeLists.txt
@@ -18,9 +18,9 @@ set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 include(FetchContent)
-FetchContent_Declare(highway GIT_REPOSITORY https://github.com/google/highway.git GIT_TAG 9414b48aeec251b69e6cadbfa42bebb5ddae1c34)
+FetchContent_Declare(highway GIT_REPOSITORY https://github.com/google/highway.git GIT_TAG bfc36a6e633af94e63ac4b91c687bf0354cb24e0)
 FetchContent_MakeAvailable(highway)
-FetchContent_Declare(sentencepiece GIT_REPOSITORY https://github.com/google/sentencepiece GIT_TAG 53de76561cfc149d3c01037f0595669ad32a5e7c)
+FetchContent_Declare(sentencepiece GIT_REPOSITORY https://github.com/google/sentencepiece GIT_TAG 9045b2f60fa2b323dfac0eaef8fc17565036f9f9)
 FetchContent_MakeAvailable(sentencepiece)
 
 
@@ -34,7 +34,7 @@ if (BUILD_MODE STREQUAL "local")
   # Relative path to gemma.cpp from examples/hello_world/build/
   FetchContent_Declare(gemma SOURCE_DIR ../../..)
 else()
-  FetchContent_Declare(gemma GIT_REPOSITORY https://github.com/google/gemma.cpp.git GIT_TAG a9aa63fd2ea6b786ed0706d619588bfe2d43370e)
+  FetchContent_Declare(gemma GIT_REPOSITORY https://github.com/google/gemma.cpp.git GIT_TAG 4a924f179448dc83e46a2af9520c61b4ef56174c)
 endif()
 FetchContent_MakeAvailable(gemma)
 
diff --git a/examples/hello_world/run.cc b/examples/hello_world/run.cc
index 52bd507..193903f 100644
--- a/examples/hello_world/run.cc
+++ b/examples/hello_world/run.cc
@@ -44,9 +44,7 @@ int main(int argc, char** argv) {
   for (int arg = 0; arg < argc; ++arg) {
     // Find a --reject flag and consume everything after it.
     if (strcmp(argv[arg], "--reject") == 0) {
-      while (++arg < argc) {
-        reject_tokens.insert(atoi(argv[arg]));  // NOLINT
-      }
+      while (++arg < argc) reject_tokens.insert(atoi(argv[arg]));
     }
   }
 
@@ -90,9 +88,9 @@ int main(int argc, char** argv) {
       .verbosity = 0,
       .stream_token = stream_token,
       .accept_token =
-          [&](int token, float /* prob */) {
-            return !reject_tokens.contains(token);
-          },
+          std::function<bool(int, float)>([&](int token, float /* prob */) {
+            return reject_tokens.find(token) == reject_tokens.end();
+          }),
   };
   gemma.Generate(runtime_config, tokens, 0, kv_cache, env, timing_info);
 }