diff --git a/Makefile.am b/Makefile.am
index cb52f37911..4c7c7111d4 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -958,6 +958,8 @@ php_EXTRA_DIST=                                                       \
   php/tests/EncodeDecodeTest.php                                      \
   php/tests/force_c_ext.php                                           \
   php/tests/gdb_test.sh                                               \
+  php/tests/generated_previous/GPBMetadata/ProtoPrevious/TestPreviouslyUnreservedMessage.php \
+  php/tests/generated_previous/Previous/readonly.php                  \
   php/tests/GeneratedClassTest.php                                    \
   php/tests/GeneratedPhpdocTest.php                                   \
   php/tests/GeneratedServiceTest.php                                  \
@@ -967,6 +969,7 @@ php_EXTRA_DIST=                                                       \
   php/tests/multirequest.php                                          \
   php/tests/multirequest.sh                                           \
   php/tests/PhpImplementationTest.php                                 \
+  php/tests/PreviouslyGeneratedClassTest.php                          \
   php/tests/proto/empty/echo.proto                                    \
   php/tests/proto/test.proto                                          \
   php/tests/proto/test_descriptors.proto                              \
@@ -985,6 +988,7 @@ php_EXTRA_DIST=                                                       \
   php/tests/proto/test_service.proto                                  \
   php/tests/proto/test_service_namespace.proto                        \
   php/tests/proto/test_wrapper_type_setters.proto                     \
+  php/tests/proto_previous/test_previously_unreserved_message.proto   \
   php/tests/test_base.php                                             \
   php/tests/test_util.php                                             \
   php/tests/valgrind.supp                                             \
diff --git a/php/BUILD.bazel b/php/BUILD.bazel
index 3460959574..dfb0976fca 100644
--- a/php/BUILD.bazel
+++ b/php/BUILD.bazel
@@ -12,7 +12,9 @@ pkg_files(
         "src/Google/Protobuf/**/*.php",
         "tests/*.php",
         "tests/*.sh",
+        "tests/generated_previous/**/*.php",
         "tests/proto/**/*.proto",
+        "tests/proto_previous/*.proto",
     ]) + [
         "BUILD.bazel",
         "README.md",