Flagging the missing API entries.
diff --git a/grpc.def b/grpc.def
index d37e687..bd0bc85 100644
--- a/grpc.def
+++ b/grpc.def
@@ -99,6 +99,7 @@
     grpc_auth_context_set_peer_identity_property_name
     grpc_channel_credentials_release
     grpc_google_default_credentials_create
+    grpc_set_ssl_roots_override_callback
     grpc_ssl_credentials_create
     grpc_call_credentials_release
     grpc_composite_channel_credentials_create
diff --git a/include/grpc/grpc_security.h b/include/grpc/grpc_security.h
index 3de5cae..ef7205d 100644
--- a/include/grpc/grpc_security.h
+++ b/include/grpc/grpc_security.h
@@ -167,7 +167,8 @@
    before any ssl credentials are created to have the desired side effect.
    If GRPC_DEFAULT_SSL_ROOTS_FILE_PATH environment is set to a valid path, the
    callback will not be called. */
-void grpc_set_ssl_roots_override_callback(grpc_ssl_roots_override_callback cb);
+GRPCAPI void grpc_set_ssl_roots_override_callback(
+    grpc_ssl_roots_override_callback cb);
 
 /* Object that holds a private key / certificate chain pair in PEM format. */
 typedef struct {
diff --git a/src/python/grpcio/grpc/_cython/imports.generated.c b/src/python/grpcio/grpc/_cython/imports.generated.c
index 4aa41db..4b1860c 100644
--- a/src/python/grpcio/grpc/_cython/imports.generated.c
+++ b/src/python/grpcio/grpc/_cython/imports.generated.c
@@ -137,6 +137,7 @@
 grpc_auth_context_set_peer_identity_property_name_type grpc_auth_context_set_peer_identity_property_name_import;
 grpc_channel_credentials_release_type grpc_channel_credentials_release_import;
 grpc_google_default_credentials_create_type grpc_google_default_credentials_create_import;
+grpc_set_ssl_roots_override_callback_type grpc_set_ssl_roots_override_callback_import;
 grpc_ssl_credentials_create_type grpc_ssl_credentials_create_import;
 grpc_call_credentials_release_type grpc_call_credentials_release_import;
 grpc_composite_channel_credentials_create_type grpc_composite_channel_credentials_create_import;
@@ -401,6 +402,7 @@
   grpc_auth_context_set_peer_identity_property_name_import = (grpc_auth_context_set_peer_identity_property_name_type) GetProcAddress(library, "grpc_auth_context_set_peer_identity_property_name");
   grpc_channel_credentials_release_import = (grpc_channel_credentials_release_type) GetProcAddress(library, "grpc_channel_credentials_release");
   grpc_google_default_credentials_create_import = (grpc_google_default_credentials_create_type) GetProcAddress(library, "grpc_google_default_credentials_create");
+  grpc_set_ssl_roots_override_callback_import = (grpc_set_ssl_roots_override_callback_type) GetProcAddress(library, "grpc_set_ssl_roots_override_callback");
   grpc_ssl_credentials_create_import = (grpc_ssl_credentials_create_type) GetProcAddress(library, "grpc_ssl_credentials_create");
   grpc_call_credentials_release_import = (grpc_call_credentials_release_type) GetProcAddress(library, "grpc_call_credentials_release");
   grpc_composite_channel_credentials_create_import = (grpc_composite_channel_credentials_create_type) GetProcAddress(library, "grpc_composite_channel_credentials_create");
diff --git a/src/python/grpcio/grpc/_cython/imports.generated.h b/src/python/grpcio/grpc/_cython/imports.generated.h
index f5329f3..ca30742 100644
--- a/src/python/grpcio/grpc/_cython/imports.generated.h
+++ b/src/python/grpcio/grpc/_cython/imports.generated.h
@@ -361,6 +361,9 @@
 typedef grpc_channel_credentials *(*grpc_google_default_credentials_create_type)(void);
 extern grpc_google_default_credentials_create_type grpc_google_default_credentials_create_import;
 #define grpc_google_default_credentials_create grpc_google_default_credentials_create_import
+typedef void(*grpc_set_ssl_roots_override_callback_type)(grpc_ssl_roots_override_callback cb);
+extern grpc_set_ssl_roots_override_callback_type grpc_set_ssl_roots_override_callback_import;
+#define grpc_set_ssl_roots_override_callback grpc_set_ssl_roots_override_callback_import
 typedef grpc_channel_credentials *(*grpc_ssl_credentials_create_type)(const char *pem_root_certs, grpc_ssl_pem_key_cert_pair *pem_key_cert_pair, void *reserved);
 extern grpc_ssl_credentials_create_type grpc_ssl_credentials_create_import;
 #define grpc_ssl_credentials_create grpc_ssl_credentials_create_import
diff --git a/src/ruby/ext/grpc/rb_grpc_imports.generated.c b/src/ruby/ext/grpc/rb_grpc_imports.generated.c
index d4ddb73..1af34d9 100644
--- a/src/ruby/ext/grpc/rb_grpc_imports.generated.c
+++ b/src/ruby/ext/grpc/rb_grpc_imports.generated.c
@@ -137,6 +137,7 @@
 grpc_auth_context_set_peer_identity_property_name_type grpc_auth_context_set_peer_identity_property_name_import;
 grpc_channel_credentials_release_type grpc_channel_credentials_release_import;
 grpc_google_default_credentials_create_type grpc_google_default_credentials_create_import;
+grpc_set_ssl_roots_override_callback_type grpc_set_ssl_roots_override_callback_import;
 grpc_ssl_credentials_create_type grpc_ssl_credentials_create_import;
 grpc_call_credentials_release_type grpc_call_credentials_release_import;
 grpc_composite_channel_credentials_create_type grpc_composite_channel_credentials_create_import;
@@ -397,6 +398,7 @@
   grpc_auth_context_set_peer_identity_property_name_import = (grpc_auth_context_set_peer_identity_property_name_type) GetProcAddress(library, "grpc_auth_context_set_peer_identity_property_name");
   grpc_channel_credentials_release_import = (grpc_channel_credentials_release_type) GetProcAddress(library, "grpc_channel_credentials_release");
   grpc_google_default_credentials_create_import = (grpc_google_default_credentials_create_type) GetProcAddress(library, "grpc_google_default_credentials_create");
+  grpc_set_ssl_roots_override_callback_import = (grpc_set_ssl_roots_override_callback_type) GetProcAddress(library, "grpc_set_ssl_roots_override_callback");
   grpc_ssl_credentials_create_import = (grpc_ssl_credentials_create_type) GetProcAddress(library, "grpc_ssl_credentials_create");
   grpc_call_credentials_release_import = (grpc_call_credentials_release_type) GetProcAddress(library, "grpc_call_credentials_release");
   grpc_composite_channel_credentials_create_import = (grpc_composite_channel_credentials_create_type) GetProcAddress(library, "grpc_composite_channel_credentials_create");
diff --git a/src/ruby/ext/grpc/rb_grpc_imports.generated.h b/src/ruby/ext/grpc/rb_grpc_imports.generated.h
index 618ae5e..b61c528 100644
--- a/src/ruby/ext/grpc/rb_grpc_imports.generated.h
+++ b/src/ruby/ext/grpc/rb_grpc_imports.generated.h
@@ -361,6 +361,9 @@
 typedef grpc_channel_credentials *(*grpc_google_default_credentials_create_type)(void);
 extern grpc_google_default_credentials_create_type grpc_google_default_credentials_create_import;
 #define grpc_google_default_credentials_create grpc_google_default_credentials_create_import
+typedef void(*grpc_set_ssl_roots_override_callback_type)(grpc_ssl_roots_override_callback cb);
+extern grpc_set_ssl_roots_override_callback_type grpc_set_ssl_roots_override_callback_import;
+#define grpc_set_ssl_roots_override_callback grpc_set_ssl_roots_override_callback_import
 typedef grpc_channel_credentials *(*grpc_ssl_credentials_create_type)(const char *pem_root_certs, grpc_ssl_pem_key_cert_pair *pem_key_cert_pair, void *reserved);
 extern grpc_ssl_credentials_create_type grpc_ssl_credentials_create_import;
 #define grpc_ssl_credentials_create grpc_ssl_credentials_create_import