diff --git a/gomod2nix.toml b/gomod2nix.toml
index b68512da..e17b54c3 100644
--- a/gomod2nix.toml
+++ b/gomod2nix.toml
@@ -97,6 +97,9 @@ schema = 3
   [mod."github.com/fumiama/jieba"]
     version = "v0.0.0-20221203025406-36c17a10b565"
     hash = "sha256-DvDx1pdldkdaSszrbadM/VwqT9TTSmWl6G6a+ysXYEM="
+  [mod."github.com/fumiama/slowdo"]
+    version = "v0.0.0-20241001071333-19864b14750a"
+    hash = "sha256-4Dakl5WLnbTPc9fxsMNgt66xL1GqwE2TIF1Mom4mylw="
   [mod."github.com/fumiama/terasu"]
     version = "v0.0.0-20240507144117-547a591149c0"
     hash = "sha256-ZZG5/Ckq4R0eojmiuli5ZRToDNQt4VeRwdy0jjVCvbg="