diff --git a/vendor/patches/google_riscv-dv/0002-pin-bitstring.patch b/vendor/patches/google_riscv-dv/0002-pin-bitstring.patch
new file mode 100644
index 0000000000..bc844d8557
--- /dev/null
+++ b/vendor/patches/google_riscv-dv/0002-pin-bitstring.patch
@@ -0,0 +1,10 @@
+--- a/requirements.txt
++++ b/requirements.txt
+@@ -1,5 +1,5 @@
+ PyYAML
+-bitstring
++bitstring==3.1.9
+ Sphinx
+ Pallets-Sphinx-Themes
+ sphinxcontrib-log-cabinet
+