diff --git a/flake.lock b/flake.lock
index 25b4090..defcd45 100644
--- a/flake.lock
+++ b/flake.lock
@@ -133,36 +133,12 @@
       }
     },
     "cl-nix-forge_3": {
-      "inputs": {
-        "nixpkgs": [
-          "cl-parser-kit",
-          "cl-prolog",
-          "nixpkgs"
-        ],
-        "treefmt-nix": "treefmt-nix_2"
-      },
-      "locked": {
-        "lastModified": 1785825792,
-        "narHash": "sha256-FjpTPYXj5BINxpgFbNqKQgeB6p/ANR/1N8T4lSHS7kU=",
-        "owner": "nerima-lisp",
-        "repo": "cl-nix-forge",
-        "rev": "df1e772cda1efcdb90297b49ca1a25b396b8bdd7",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nerima-lisp",
-        "ref": "v0.5.0",
-        "repo": "cl-nix-forge",
-        "type": "github"
-      }
-    },
-    "cl-nix-forge_4": {
       "inputs": {
         "nixpkgs": [
           "cl-prolog-kit",
           "nixpkgs"
         ],
-        "treefmt-nix": "treefmt-nix_4"
+        "treefmt-nix": "treefmt-nix_3"
       },
       "locked": {
         "lastModified": 1785825792,
@@ -179,13 +155,13 @@
         "type": "github"
       }
     },
-    "cl-nix-forge_5": {
+    "cl-nix-forge_4": {
       "inputs": {
         "nixpkgs": [
           "cl-weave",
           "nixpkgs"
         ],
-        "treefmt-nix": "treefmt-nix_6"
+        "treefmt-nix": "treefmt-nix_5"
       },
       "locked": {
         "lastModified": 1785825792,
@@ -205,7 +181,9 @@
     "cl-parser-kit": {
       "inputs": {
         "cl-nix-forge": "cl-nix-forge_2",
-        "cl-prolog": "cl-prolog",
+        "cl-prolog-kit": [
+          "cl-prolog-kit"
+        ],
         "cl-weave": [
           "cl-weave"
         ],
@@ -215,61 +193,26 @@
         "paredit-cli": [
           "paredit-cli"
         ],
-        "treefmt-nix": "treefmt-nix_3"
+        "treefmt-nix": "treefmt-nix_2"
       },
       "locked": {
-        "lastModified": 1785931427,
-        "narHash": "sha256-IR8GbJVuSKS8fTcuQezTVlJJ3nU802shk2fdiHszcig=",
+        "lastModified": 1786971533,
+        "narHash": "sha256-ch66xT9MD2WyBOEEEf5/Bw1jchq2/YM+pe+KVvKcTzA=",
         "owner": "nerima-lisp",
         "repo": "cl-parser-kit",
-        "rev": "6379014e6d85bdaecc57157611baa4ddf4b2b206",
+        "rev": "88d0f0c42d35904010936314191ebf62ac401aa1",
         "type": "github"
       },
       "original": {
         "owner": "nerima-lisp",
-        "ref": "v1.1.1",
         "repo": "cl-parser-kit",
-        "type": "github"
-      }
-    },
-    "cl-prolog": {
-      "inputs": {
-        "cl-nix-forge": "cl-nix-forge_3",
-        "cl-weave": [
-          "cl-parser-kit",
-          "cl-weave"
-        ],
-        "nixpkgs": [
-          "cl-parser-kit",
-          "nixpkgs"
-        ],
-        "paredit-cli": [
-          "cl-parser-kit",
-          "paredit-cli"
-        ],
-        "treefmt-nix": [
-          "cl-parser-kit",
-          "treefmt-nix"
-        ]
-      },
-      "locked": {
-        "lastModified": 1785918678,
-        "narHash": "sha256-Xr2Ga1qzz08MApO5N4v+bs/wmCC4FdJlYyjsC8TnXxU=",
-        "owner": "nerima-lisp",
-        "repo": "cl-prolog",
-        "rev": "7581f72c7d080afd4c863e1d44010ccb5d7258ad",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nerima-lisp",
-        "ref": "v1.4.3",
-        "repo": "cl-prolog",
+        "rev": "88d0f0c42d35904010936314191ebf62ac401aa1",
         "type": "github"
       }
     },
     "cl-prolog-kit": {
       "inputs": {
-        "cl-nix-forge": "cl-nix-forge_4",
+        "cl-nix-forge": "cl-nix-forge_3",
         "cl-weave": [
           "cl-weave"
         ],
@@ -279,7 +222,7 @@
         "paredit-cli": [
           "paredit-cli"
         ],
-        "treefmt-nix": "treefmt-nix_5"
+        "treefmt-nix": "treefmt-nix_4"
       },
       "locked": {
         "lastModified": 1786948477,
@@ -298,14 +241,14 @@
     },
     "cl-weave": {
       "inputs": {
-        "cl-nix-forge": "cl-nix-forge_5",
+        "cl-nix-forge": "cl-nix-forge_4",
         "nixpkgs": [
           "nixpkgs"
         ],
         "paredit-cli": [
           "paredit-cli"
         ],
-        "treefmt-nix": "treefmt-nix_7"
+        "treefmt-nix": "treefmt-nix_6"
       },
       "locked": {
         "lastModified": 1785915502,
@@ -360,7 +303,7 @@
           "nixpkgs"
         ],
         "rust-overlay": "rust-overlay",
-        "treefmt-nix": "treefmt-nix_8"
+        "treefmt-nix": "treefmt-nix_7"
       },
       "locked": {
         "lastModified": 1785902408,
@@ -390,7 +333,7 @@
         "cl-weave": "cl-weave",
         "nixpkgs": "nixpkgs",
         "paredit-cli": "paredit-cli",
-        "treefmt-nix": "treefmt-nix_9"
+        "treefmt-nix": "treefmt-nix_8"
       }
     },
     "rust-overlay": {
@@ -440,8 +383,6 @@
       "inputs": {
         "nixpkgs": [
           "cl-parser-kit",
-          "cl-prolog",
-          "cl-nix-forge",
           "nixpkgs"
         ]
       },
@@ -460,27 +401,6 @@
       }
     },
     "treefmt-nix_3": {
-      "inputs": {
-        "nixpkgs": [
-          "cl-parser-kit",
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1785360170,
-        "narHash": "sha256-XE1lKgQ3eIO3E7zWryqcRsax+mYXod/5RHBn4YaR9YE=",
-        "owner": "numtide",
-        "repo": "treefmt-nix",
-        "rev": "d1187f8bc71fb8aab02395869ec3f5c1920f75c0",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "treefmt-nix",
-        "type": "github"
-      }
-    },
-    "treefmt-nix_4": {
       "inputs": {
         "nixpkgs": [
           "cl-prolog-kit",
@@ -502,7 +422,7 @@
         "type": "github"
       }
     },
-    "treefmt-nix_5": {
+    "treefmt-nix_4": {
       "inputs": {
         "nixpkgs": [
           "cl-prolog-kit",
@@ -523,7 +443,7 @@
         "type": "github"
       }
     },
-    "treefmt-nix_6": {
+    "treefmt-nix_5": {
       "inputs": {
         "nixpkgs": [
           "cl-weave",
@@ -545,7 +465,7 @@
         "type": "github"
       }
     },
-    "treefmt-nix_7": {
+    "treefmt-nix_6": {
       "inputs": {
         "nixpkgs": [
           "cl-weave",
@@ -566,7 +486,7 @@
         "type": "github"
       }
     },
-    "treefmt-nix_8": {
+    "treefmt-nix_7": {
       "inputs": {
         "nixpkgs": [
           "paredit-cli",
@@ -587,7 +507,7 @@
         "type": "github"
       }
     },
-    "treefmt-nix_9": {
+    "treefmt-nix_8": {
       "inputs": {
         "nixpkgs": [
           "nixpkgs"
diff --git a/flake.nix b/flake.nix
index d2a1fec..c38934e 100644
--- a/flake.nix
+++ b/flake.nix
@@ -80,7 +80,7 @@
   # independent declarative specification of the ECMA-48 CSI byte-class
   # grammar (see contrib/cl-prolog-kit-csi-grammar.lisp for the first, built on
   # cl-prolog-kit's DCG support instead). Never part of the core build/CI.
-  inputs.cl-parser-kit.url = "github:nerima-lisp/cl-parser-kit/v1.1.1";
+  inputs.cl-parser-kit.url = "github:nerima-lisp/cl-parser-kit/88d0f0c42d35904010936314191ebf62ac401aa1";
   inputs.cl-parser-kit.inputs.nixpkgs.follows = "nixpkgs";
   inputs.cl-parser-kit.inputs.cl-prolog-kit.follows = "cl-prolog-kit";
   inputs.cl-parser-kit.inputs.cl-weave.follows = "cl-weave";