--- a/caffe2/CMakeLists.txt	2026-01-19 20:28:45.127614622 +0100
+++ b/caffe2/CMakeLists.txt	2026-01-19 20:32:04.509213652 +0100
@@ -1495,6 +1495,12 @@
   endif()
 endif()
 
+if(USE_DISTRIBUTED)
+  if(USE_MPI)
+    find_package(httplib REQUIRED)
+    target_link_libraries(torch_cpu PRIVATE httplib::httplib)
+  endif()
+endif()
 if(NOT INTERN_BUILD_MOBILE)
   if(${CAFFE2_LINK_LOCAL_PROTOBUF})
     target_link_libraries(torch_cpu INTERFACE protobuf::libprotobuf)