diff --git a/docs/book/Makefile b/docs/book/Makefile
index 45b625e35..23ad08637 100644
--- a/docs/book/Makefile
+++ b/docs/book/Makefile
@@ -13,6 +13,7 @@
 # limitations under the License.
 
 # Directories.
+ROOT_DIR := $(realpath ../..)
 TOOLS_DIR := $(realpath ../../hack/tools)
 TOOLS_BIN_DIR := $(TOOLS_DIR)/bin
 BIN_DIR := bin
@@ -31,4 +32,5 @@ serve: $(MDBOOK)
 
 .PHONY: build
 build: $(MDBOOK)
-	$(MDBOOK) build
\ No newline at end of file
+	$(MDBOOK) build
+	cp $(ROOT_DIR)/index.yaml book