diff --git a/grpc.gemspec b/grpc.gemspec
index b6aae7f8fb2..12c8ece0bd1 100644
--- a/grpc.gemspec
+++ b/grpc.gemspec
@@ -3032,7 +3032,6 @@ Gem::Specification.new do |s|
   s.files += %w( third_party/cares/cares/include/ares_nameser.h )
   s.files += %w( third_party/cares/cares/include/ares_rules.h )
   s.files += %w( third_party/cares/cares/include/ares_version.h )
-  s.files += %w( third_party/cares/cares/src/config-win32.h )
   s.files += %w( third_party/cares/cares/src/lib/ares__addrinfo2hostent.c )
   s.files += %w( third_party/cares/cares/src/lib/ares__addrinfo_localhost.c )
   s.files += %w( third_party/cares/cares/src/lib/ares__close_sockets.c )
@@ -3107,6 +3106,7 @@ Gem::Specification.new do |s|
   s.files += %w( third_party/cares/cares/src/lib/bitncmp.c )
   s.files += %w( third_party/cares/cares/src/lib/bitncmp.h )
   s.files += %w( third_party/cares/cares/src/lib/config-dos.h )
+  s.files += %w( third_party/cares/cares/src/lib/config-win32.h )
   s.files += %w( third_party/cares/cares/src/lib/inet_net_pton.c )
   s.files += %w( third_party/cares/cares/src/lib/inet_ntop.c )
   s.files += %w( third_party/cares/cares/src/lib/setup_once.h )
diff --git a/src/c-ares/gen_build_yaml.py b/src/c-ares/gen_build_yaml.py
index 479da2c93c0..ffc2d6f5d75 100755
--- a/src/c-ares/gen_build_yaml.py
+++ b/src/c-ares/gen_build_yaml.py
@@ -139,7 +139,7 @@ try:
                 "third_party/cares/cares/src/lib/ares_inet_net_pton.h",
                 "third_party/cares/cares/src/lib/ares_data.h",
                 "third_party/cares/cares/src/lib/ares_getenv.h",
-                "third_party/cares/cares/src/config-win32.h",
+                "third_party/cares/cares/src/lib/config-win32.h",
                 "third_party/cares/cares/src/lib/ares_strdup.h",
                 "third_party/cares/cares/src/lib/ares_iphlpapi.h",
                 "third_party/cares/cares/src/lib/ares_setup.h",
diff --git a/third_party/cares/cares.BUILD b/third_party/cares/cares.BUILD
index 44ac6cb8d95..784daed1b6f 100644
--- a/third_party/cares/cares.BUILD
+++ b/third_party/cares/cares.BUILD
@@ -216,7 +216,7 @@ cc_library(
         "src/lib/ares_inet_net_pton.h",
         "src/lib/ares_data.h",
         "src/lib/ares_getenv.h",
-        "src/config-win32.h",
+        "src/lib/config-win32.h",
         "src/lib/ares_strdup.h",
         "src/lib/ares_iphlpapi.h",
         "src/lib/ares_setup.h",