diff --git a/tools/doxygen/Doxyfile.c++ b/tools/doxygen/Doxyfile.c++
index 7ac4ed4b3ec..322ab5eb983 100644
--- a/tools/doxygen/Doxyfile.c++
+++ b/tools/doxygen/Doxyfile.c++
@@ -784,6 +784,7 @@ doc/http-grpc-status-mapping.md \
 doc/http2-interop-test-descriptions.md \
 doc/internationalization.md \
 doc/interop-test-descriptions.md \
+doc/keepalive.md \
 doc/load-balancing.md \
 doc/naming.md \
 doc/server-reflection.md \
diff --git a/tools/doxygen/Doxyfile.c++.internal b/tools/doxygen/Doxyfile.c++.internal
index c328387efaf..ba322a90a54 100644
--- a/tools/doxygen/Doxyfile.c++.internal
+++ b/tools/doxygen/Doxyfile.c++.internal
@@ -784,6 +784,7 @@ doc/http-grpc-status-mapping.md \
 doc/http2-interop-test-descriptions.md \
 doc/internationalization.md \
 doc/interop-test-descriptions.md \
+doc/keepalive.md \
 doc/load-balancing.md \
 doc/naming.md \
 doc/server-reflection.md \
diff --git a/tools/doxygen/Doxyfile.core b/tools/doxygen/Doxyfile.core
index a85c328b07b..4899eee3ea4 100644
--- a/tools/doxygen/Doxyfile.core
+++ b/tools/doxygen/Doxyfile.core
@@ -786,6 +786,7 @@ doc/http-grpc-status-mapping.md \
 doc/http2-interop-test-descriptions.md \
 doc/internationalization.md \
 doc/interop-test-descriptions.md \
+doc/keepalive.md \
 doc/load-balancing.md \
 doc/naming.md \
 doc/server-reflection.md \
diff --git a/tools/doxygen/Doxyfile.core.internal b/tools/doxygen/Doxyfile.core.internal
index 1a5dfb902b4..576950934ec 100644
--- a/tools/doxygen/Doxyfile.core.internal
+++ b/tools/doxygen/Doxyfile.core.internal
@@ -786,6 +786,7 @@ doc/http-grpc-status-mapping.md \
 doc/http2-interop-test-descriptions.md \
 doc/internationalization.md \
 doc/interop-test-descriptions.md \
+doc/keepalive.md \
 doc/load-balancing.md \
 doc/naming.md \
 doc/server-reflection.md \