diff --git a/srcpkgs/iverilog/update b/srcpkgs/iverilog/update
new file mode 100644
index 00000000000..1047fd57c00
--- /dev/null
+++ b/srcpkgs/iverilog/update
@@ -0,0 +1,3 @@
+site="https://api.github.com/repos/steveicarus/$pkgname/tags"
+pattern='"name":\s*"v\K[\d_]+(?=")'
+version=${version//./_}