diff --git a/flake.lock b/flake.lock
index f40e959..1c9b1c3 100644
--- a/flake.lock
+++ b/flake.lock
@@ -853,16 +853,16 @@
         ]
       },
       "locked": {
-        "lastModified": 1781788313,
-        "narHash": "sha256-FnlpVshUbq0jm5unPjUi/woRBM9wr3a2beVidszbLwM=",
+        "lastModified": 1781789100,
+        "narHash": "sha256-i7zTkYSpQGMBfVvD5mNZ1UBU1Slk0Yi31g2GIHvCSbM=",
         "owner": "logos-co",
         "repo": "logos-module-builder",
-        "rev": "bc868bf47f9d797637ac78af814b0db718dde4b8",
+        "rev": "5302512d67e076c07cccdf314fd22e073551a47b",
         "type": "github"
       },
       "original": {
         "owner": "logos-co",
-        "ref": "bc868bf47f9d797637ac78af814b0db718dde4b8",
+        "ref": "fix/dev-shell-external-lib-paths",
         "repo": "logos-module-builder",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index debd81f..6efc071 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,8 +2,10 @@
   description = "Logos Blockchain Module - Qt6 Plugin";
 
   inputs = {
-    logos-module-builder.url = "github:logos-co/logos-module-builder?ref=bc868bf47f9d797637ac78af814b0db718dde4b8";
-    # v0.1.3-rc.10-compatible + rust-rapidsnark nix fixes + cli commands + leader_claim + channel deposit / wallet notes C bindings
+    # TEMP: pinned to the dev-shell external-lib-paths fix branch (LOGOS_EXT_ROOT_<NAME>).
+        # Revert to "github:logos-co/logos-module-builder" once that branch merges to master.
+        logos-module-builder.url = "github:logos-co/logos-module-builder?ref=fix/dev-shell-external-lib-paths";
+    # v0.1.3-rc.10-compatible + rust-rapidsnark nix fixes + cli commands + leader_claim + channel deposit / wallet notes C bindings + config generation fixes
     logos-blockchain.url = "github:logos-blockchain/logos-blockchain?ref=0222706b14010fbdfbe9a94d3617ebf46a77fdd1";
   };