diff --git a/var/spack/repos/builtin/packages/yosys/package.py b/var/spack/repos/builtin/packages/yosys/package.py
index 8fd88a0172f..52e8d2aebc3 100644
--- a/var/spack/repos/builtin/packages/yosys/package.py
+++ b/var/spack/repos/builtin/packages/yosys/package.py
@@ -28,6 +28,7 @@ class Yosys(MakefilePackage):
 
     version("master", branch="master")
 
+    version("0.51", commit="c4b5190229616f7ebf8197f43990b4429de3e420", submodules=True)
     version("0.50", commit="b5170e1394f602c607e75bdbb1a2b637118f2086", submodules=True)
     version("0.49", commit="427b5a251bfb511528a177bfa92567b4b3ada3dd", submodules=True)
     version("0.48", commit="aaa5347494801e9e3870b31387da59da24233f76", submodules=True)