diff --git a/Nevanlinna/cauchyRiemann.lean b/Nevanlinna/cauchyRiemann.lean
index 9a839b1..83fd716 100644
--- a/Nevanlinna/cauchyRiemann.lean
+++ b/Nevanlinna/cauchyRiemann.lean
@@ -31,7 +31,7 @@ theorem CauchyRiemann₃ : (DifferentiableAt ℂ f z)
   have ContinuousLinearMap.comp_lineDeriv : ∀ w : ℂ, ∀ l : ℂ →L[ℝ] ℝ, lineDeriv ℝ (l ∘ f) z w = l ((fderiv ℝ f z) w) := by
     intro w l
     rw [DifferentiableAt.lineDeriv_eq_fderiv]
-    rw [fderiv.comp]
+    rw [fderiv_comp]
     simp
     fun_prop
     exact h.restrictScalars ℝ
diff --git a/lake-manifest.json b/lake-manifest.json
index ab410a8..b0837ec 100644
--- a/lake-manifest.json
+++ b/lake-manifest.json
@@ -5,7 +5,7 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "500a529408399c44d7e1649577e3c98697f95aa4",
+   "rev": "325d06c3ef6bcb16c43c4ac6614976731ce6a63e",
    "name": "batteries",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -15,7 +15,7 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "1357f4f49450abb9dfd4783e38219f4ce84f9785",
+   "rev": "303b23fbcea94ac4f96e590c1cad6618fd4f5f41",
    "name": "Qq",
    "manifestFile": "lake-manifest.json",
    "inputRev": "master",
@@ -25,7 +25,7 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "9ac12945862fa39eab7795c2f79bb9aa0c8e332c",
+   "rev": "5dfdc66e0d503631527ad90c1b5d7815c86a8662",
    "name": "aesop",
    "manifestFile": "lake-manifest.json",
    "inputRev": "master",
@@ -35,17 +35,17 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "baa65c6339a56bd22b7292aa4511c54b3cc7a6af",
+   "rev": "1383e72b40dd62a566896a6e348ffe868801b172",
    "name": "proofwidgets",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "v0.0.43",
+   "inputRev": "v0.0.46",
    "inherited": true,
    "configFile": "lakefile.lean"},
   {"url": "https://github.com/leanprover/lean4-cli",
    "type": "git",
    "subDir": null,
    "scope": "leanprover",
-   "rev": "2cf1030dc2ae6b3632c84a09350b675ef3e347d0",
+   "rev": "726b3c9ad13acca724d4651f14afc4804a7b0e4d",
    "name": "Cli",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -55,7 +55,7 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "c1970bea80ac3357a6a991a6d00d12e7435c12c7",
+   "rev": "ac7b989cbf99169509433124ae484318e953d201",
    "name": "importGraph",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -65,17 +65,27 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "7bedaed1ef024add1e171cc17706b012a9a37802",
+   "rev": "86d0d0584f5cd165353e2f8a30c455cd0e168ac2",
    "name": "LeanSearchClient",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
    "inherited": true,
    "configFile": "lakefile.toml"},
+  {"url": "https://github.com/leanprover-community/plausible",
+   "type": "git",
+   "subDir": null,
+   "scope": "leanprover-community",
+   "rev": "42dc02bdbc5d0c2f395718462a76c3d87318f7fa",
+   "name": "plausible",
+   "manifestFile": "lake-manifest.json",
+   "inputRev": "main",
+   "inherited": true,
+   "configFile": "lakefile.toml"},
   {"url": "https://github.com/leanprover-community/mathlib4.git",
    "type": "git",
    "subDir": null,
    "scope": "",
-   "rev": "d9273054fe5aee13954cca827d9bbfe7a01bde67",
+   "rev": "b8570f16d4170663edb8a12b8eae9f0d84e96ab4",
    "name": "mathlib",
    "manifestFile": "lake-manifest.json",
    "inputRev": null,
diff --git a/lean-toolchain b/lean-toolchain
index eff86fd..57a4710 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:v4.13.0-rc3
+leanprover/lean4:v4.14.0-rc2