diff --git a/tools/doxygen/Doxyfile.c++ b/tools/doxygen/Doxyfile.c++
index 551ba46b3b8..4d2c4299577 100644
--- a/tools/doxygen/Doxyfile.c++
+++ b/tools/doxygen/Doxyfile.c++
@@ -779,6 +779,7 @@ doc/fail_fast.md \
 doc/g_stands_for.md \
 doc/health-checking.md \
 doc/http-grpc-status-mapping.md \
+doc/internationalization.md \
 doc/interop-test-descriptions.md \
 doc/load-balancing.md \
 doc/naming.md \
diff --git a/tools/doxygen/Doxyfile.c++.internal b/tools/doxygen/Doxyfile.c++.internal
index 0d7ddfc6d67..498f572dc62 100644
--- a/tools/doxygen/Doxyfile.c++.internal
+++ b/tools/doxygen/Doxyfile.c++.internal
@@ -779,6 +779,7 @@ doc/fail_fast.md \
 doc/g_stands_for.md \
 doc/health-checking.md \
 doc/http-grpc-status-mapping.md \
+doc/internationalization.md \
 doc/interop-test-descriptions.md \
 doc/load-balancing.md \
 doc/naming.md \
diff --git a/tools/doxygen/Doxyfile.core b/tools/doxygen/Doxyfile.core
index 896ee0213b3..fa41e56b43a 100644
--- a/tools/doxygen/Doxyfile.core
+++ b/tools/doxygen/Doxyfile.core
@@ -778,6 +778,7 @@ doc/fail_fast.md \
 doc/g_stands_for.md \
 doc/health-checking.md \
 doc/http-grpc-status-mapping.md \
+doc/internationalization.md \
 doc/interop-test-descriptions.md \
 doc/load-balancing.md \
 doc/naming.md \
diff --git a/tools/doxygen/Doxyfile.core.internal b/tools/doxygen/Doxyfile.core.internal
index 04fd7bee222..bffa050041e 100644
--- a/tools/doxygen/Doxyfile.core.internal
+++ b/tools/doxygen/Doxyfile.core.internal
@@ -778,6 +778,7 @@ doc/fail_fast.md \
 doc/g_stands_for.md \
 doc/health-checking.md \
 doc/http-grpc-status-mapping.md \
+doc/internationalization.md \
 doc/interop-test-descriptions.md \
 doc/load-balancing.md \
 doc/naming.md \