diff --git a/util/build_docs.py b/util/build_docs.py
index bddfa33..1a5753e 100755
--- a/util/build_docs.py
+++ b/util/build_docs.py
@@ -76,6 +76,7 @@
         "hw/ip/i2c/data/i2c_testplan.hjson",
         "hw/ip/rv_plic/data/rv_plic_fpv_testplan.hjson",
         "hw/ip/rv_timer/data/rv_timer_testplan.hjson",
+        "hw/ip/spi_device/data/spi_device_testplan.hjson",
         "hw/ip/uart/data/uart_testplan.hjson",
         "hw/ip/tlul/data/tlul_testplan.hjson",
         "hw/top_earlgrey/data/standalone_sw_testplan.hjson",