diff --git a/flake.lock b/flake.lock
index 4846595..24a1325 100644
--- a/flake.lock
+++ b/flake.lock
@@ -25,16 +25,16 @@
     "cl-weave": {
       "flake": false,
       "locked": {
-        "lastModified": 1785915502,
-        "narHash": "sha256-NhwWewIatjblEBVJcY5b6YRBGxiowBjRDlHXJ7crCuU=",
+        "lastModified": 1785673216,
+        "narHash": "sha256-exuLElLZJeU23DiTeIsQgizz9UXVbviAUBgWBBfbxxc=",
         "owner": "nerima-lisp",
         "repo": "cl-weave",
-        "rev": "29bba54f1d711b07cc6244990d0ceff0faeec832",
+        "rev": "f75eaae8d0d31840e7b6fff836e8aa254d5ced40",
         "type": "github"
       },
       "original": {
         "owner": "nerima-lisp",
-        "ref": "v1.3.0",
+        "ref": "v1.2.0",
         "repo": "cl-weave",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index b17b51f..b40e00d 100644
--- a/flake.nix
+++ b/flake.nix
@@ -9,7 +9,7 @@
     # cl-weave is a test-only dependency (see cl-date-kit.asd), so only its
     # source tree is needed here, not its flake outputs.
     cl-weave = {
-      url = "github:nerima-lisp/cl-weave/v1.3.0";
+      url = "github:nerima-lisp/cl-weave/v1.2.0";
       flake = false;
     };