diff --git a/lake-manifest.json b/lake-manifest.json
index 128455d..f25abb9 100644
--- a/lake-manifest.json
+++ b/lake-manifest.json
@@ -5,10 +5,10 @@
    "type": "git",
    "subDir": null,
    "scope": "",
-   "rev": "b7eb3304aeae834b12dda98993a37f6a41f6f0bb",
+   "rev": "118aa17ee84656b8bd727fef7c458ee8c833385c",
    "name": "plausible",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "v4.33.0",
+   "inputRev": "v4.34.0",
    "inherited": false,
    "configFile": "lakefile.toml"}],
  "name": "LSpec",
diff --git a/lakefile.toml b/lakefile.toml
index 6490c28..331fd7f 100644
--- a/lakefile.toml
+++ b/lakefile.toml
@@ -6,7 +6,7 @@ testDriver = "tests"
 [[require]]
 name = "plausible"
 git = "https://github.com/leanprover-community/plausible"
-rev = "v4.33.0"
+rev = "v4.34.0"
 
 [[lean_lib]]
 name = "LSpec"
diff --git a/lean-toolchain b/lean-toolchain
index a8afa7d..12359f9 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:v4.33.1
+leanprover/lean4:v4.34.0