diff --git a/flake.lock b/flake.lock
index 712e40f..f80921d 100644
--- a/flake.lock
+++ b/flake.lock
@@ -56,17 +56,16 @@
         ]
       },
       "locked": {
-        "lastModified": 1787318305,
+        "lastModified": 1787324808,
         "narHash": "sha256-ROPYPTwQm29E8Pl3W6xqj13xQNtnZARjRoGjOMF+wos=",
         "owner": "logos-co",
         "repo": "logos-protocol",
-        "rev": "986813cc661682878c3ecabff2078a6d36cd5c1d",
+        "rev": "480f40ff6300e4500b437f5030883ac0c9b39f93",
         "type": "github"
       },
       "original": {
         "owner": "logos-co",
         "repo": "logos-protocol",
-        "rev": "986813cc661682878c3ecabff2078a6d36cd5c1d",
         "type": "github"
       }
     },
diff --git a/flake.nix b/flake.nix
index ca694bf..ab10df7 100644
--- a/flake.nix
+++ b/flake.nix
@@ -7,15 +7,16 @@
   # logos-nix so both repos resolve the identical nixpkgs/Qt pin — the QRO
   # wire is Qt-version-sensitive.
   #
-  # TEMPORARILY REV-PINNED to logos-protocol#66 (feat/module-impl-abi-manifest).
-  # That branch publishes packages.<system>.module-impl-abi: the module-impl C
-  # ABI export list, the protocol version the list belongs to, and the diff
-  # helper. nix/tests-module-impl-abi.nix reads all three, and master does not
-  # carry them yet, so unpinned this repo cannot even evaluate that check.
-  # TODO: drop the rev, back to plain "github:logos-co/logos-protocol", once
-  # logos-protocol#66 merges. Nothing else here depends on the rev — the
-  # earlier pin to feat/per-client-token-store was dropped when #59 merged.
-  inputs.logos-protocol.url = "github:logos-co/logos-protocol/986813cc661682878c3ecabff2078a6d36cd5c1d";
+  # Master-tracking. This was rev-pinned to feat/per-client-token-store while
+  # logos_host_services.h's trust-root surface (lp_token_keys,
+  # lp_inform_module_token_to, lp_grant_host_services) lived only on that
+  # branch, with protocol master still at LOGOS_PROTOCOL_VERSION_MINOR 2 —
+  # the `tests` check could not compile against it. That branch has merged
+  # (logos-protocol#59): master is 0.4.0 and carries all three.
+  #
+  # checks.module-impl-abi additionally consumes
+  # packages.<system>.module-impl-abi from here (logos-protocol#66).
+  inputs.logos-protocol.url = "github:logos-co/logos-protocol";
   inputs.logos-protocol.inputs.logos-nix.follows = "logos-nix";
   # The canonical, language-neutral LIDL frontend (lexer/parser/AST/serializer/
   # validator) the code generator links. Follows our logos-nix so it resolves