diff --git a/Mathlib/CategoryTheory/ConcreteCategory/Basic.lean b/Mathlib/CategoryTheory/ConcreteCategory/Basic.lean
index 90b3840786416d..942e1a43e44c80 100644
--- a/Mathlib/CategoryTheory/ConcreteCategory/Basic.lean
+++ b/Mathlib/CategoryTheory/ConcreteCategory/Basic.lean
@@ -1,7 +1,8 @@
 /-
 Copyright (c) 2018 Kim Morrison. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
-Authors: Kim Morrison, Johannes Hölzl, Reid Barton, Sean Leather, Yury Kudryashov, Anne Baanen, Dagur Asgeirsson
+Authors: Kim Morrison, Johannes Hölzl, Reid Barton, Sean Leather, Yury Kudryashov, Anne Baanen,
+  Dagur Asgeirsson
 -/
 module
 
diff --git a/Mathlib/Data/Nat/Choose/Basic.lean b/Mathlib/Data/Nat/Choose/Basic.lean
index 15a5c95dae82b6..efef1f793d39f9 100644
--- a/Mathlib/Data/Nat/Choose/Basic.lean
+++ b/Mathlib/Data/Nat/Choose/Basic.lean
@@ -1,7 +1,8 @@
 /-
 Copyright (c) 2018 Chris Hughes. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
-Authors: Chris Hughes, Bhavik Mehta, Stuart Presnell, Antoine Chambert-Loir, María-Inés de Frutos—Fernández
+Authors: Chris Hughes, Bhavik Mehta, Stuart Presnell, Antoine Chambert-Loir,
+  María-Inés de Frutos—Fernández
 -/
 module
 
diff --git a/Mathlib/RingTheory/Valuation/LocalSubring.lean b/Mathlib/RingTheory/Valuation/LocalSubring.lean
index 72196d82e10894..2af44c2628170a 100644
--- a/Mathlib/RingTheory/Valuation/LocalSubring.lean
+++ b/Mathlib/RingTheory/Valuation/LocalSubring.lean
@@ -1,5 +1,6 @@
 /-
-Copyright (c) 2024 Andrew Yang, Yaël Dillies, Javier López-Contreras, Daniel Funck, Junyan Xu. All rights reserved.
+Copyright (c) 2024 Andrew Yang, Yaël Dillies, Javier López-Contreras, Daniel Funck, Junyan Xu.
+All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Andrew Yang, Yaël Dillies, Javier López-Contreras, Daniel Funck, Junyan Xu
 -/
@@ -12,6 +13,10 @@ public import Mathlib.RingTheory.Polynomial.Ideal
 public import Mathlib.RingTheory.Valuation.Integral
 public import Mathlib.RingTheory.Valuation.ValuationSubring
 
+-- The copyright notice exceeds the maximum column width, but the `linter.style.header` linter
+-- flags the copyright notice if "All rights reserved." is not on the same line as "Copyright".
+set_option linter.style.header false
+
 /-!
 
 # Valuation subrings are exactly the maximal local subrings
diff --git a/Mathlib/Tactic/CancelDenoms.lean b/Mathlib/Tactic/CancelDenoms.lean
index 0f0d02d1e46f15..feb75d4d83bb9e 100644
--- a/Mathlib/Tactic/CancelDenoms.lean
+++ b/Mathlib/Tactic/CancelDenoms.lean
@@ -2,3 +2,5 @@ module
 
 public import Mathlib.Tactic.CancelDenoms.Core
 public import Mathlib.Tactic.NormNum.Ineq
+
+set_option linter.style.header false
diff --git a/Mathlib/Tactic/DefEqTransformations.lean b/Mathlib/Tactic/DefEqTransformations.lean
index 8cf395eb1e2cc0..94d36c226bbe5d 100644
--- a/Mathlib/Tactic/DefEqTransformations.lean
+++ b/Mathlib/Tactic/DefEqTransformations.lean
@@ -309,7 +309,7 @@ def etaStruct? (e : Expr) (tryWhnfR : Bool := true) : MetaM (Option Expr) := do
   let .const f _ := e.getAppFn | return none
   let some (ConstantInfo.ctorInfo fVal) := (← getEnv).find? f | return none
   unless 0 < fVal.numFields && e.getAppNumArgs == fVal.numParams + fVal.numFields do return none
-  unless isStructureLike (← getEnv) fVal.induct do return none
+  unless isStructure (← getEnv) fVal.induct do return none
   let args := e.getAppArgs
   let mut x? ← findProj fVal args pure
   if tryWhnfR then
diff --git a/Mathlib/Tactic/Linter.lean b/Mathlib/Tactic/Linter.lean
index 310e9d9a6e06cf..8bd76d57ce0b46 100644
--- a/Mathlib/Tactic/Linter.lean
+++ b/Mathlib/Tactic/Linter.lean
@@ -16,3 +16,5 @@ public import Mathlib.Tactic.Linter.PPRoundtrip
 public import Mathlib.Tactic.Linter.PrivateModule
 public import Mathlib.Tactic.Linter.UnusedInstancesInType
 public import Mathlib.Tactic.Linter.UpstreamableDecl
+
+set_option linter.style.header false
diff --git a/Mathlib/Tactic/Linter/Header.lean b/Mathlib/Tactic/Linter/Header.lean
index bd62c956b86f14..5e3afb470296e6 100644
--- a/Mathlib/Tactic/Linter/Header.lean
+++ b/Mathlib/Tactic/Linter/Header.lean
@@ -419,13 +419,14 @@ def headerLinter : Linter where run := withSetOptionIn fun stx ↦ do
     | .original lead .. => lead.toString
     | _ => ""
   -- Report any errors about the copyright line.
-  if mainModule != `Mathlib.Init then
+  if mainModule != `Mathlib.Init && mainModule != `Mathlib.Tactic then
     for (stx, m) in copyrightHeaderChecks copyright do
       Linter.logLint linter.style.header stx m!"* '{stx.getAtomVal}':\n{m}\n"
   -- Report a missing module doc-string.
   match afterImports with
     | none => return
     | some (.node _ ``Lean.Parser.Command.moduleDoc _) => return
+    | some (.node _ ``Lean.Parser.Command.eoi _) => return
     | some rest =>
     Linter.logLint linter.style.header rest
       m!"The module doc-string for a file should be the first command after the imports.\n\
diff --git a/Mathlib/Tactic/Monotonicity.lean b/Mathlib/Tactic/Monotonicity.lean
index a4a268ac4657c8..dec6ecbf4cfbca 100644
--- a/Mathlib/Tactic/Monotonicity.lean
+++ b/Mathlib/Tactic/Monotonicity.lean
@@ -2,3 +2,5 @@ module
 
 public import Mathlib.Tactic.Monotonicity.Basic
 public import Mathlib.Tactic.Monotonicity.Lemmas
+
+set_option linter.style.header false
diff --git a/Mathlib/Tactic/NormNum.lean b/Mathlib/Tactic/NormNum.lean
index 160c73ae742daf..7a839bb5977144 100644
--- a/Mathlib/Tactic/NormNum.lean
+++ b/Mathlib/Tactic/NormNum.lean
@@ -9,3 +9,5 @@ public import Mathlib.Tactic.NormNum.Ineq
 public import Mathlib.Tactic.NormNum.Inv
 public import Mathlib.Tactic.NormNum.OfScientific
 public import Mathlib.Tactic.NormNum.Pow
+
+set_option linter.style.header false
diff --git a/Mathlib/Tactic/Positivity.lean b/Mathlib/Tactic/Positivity.lean
index c55fd1e6a882e6..eaffac58155e49 100644
--- a/Mathlib/Tactic/Positivity.lean
+++ b/Mathlib/Tactic/Positivity.lean
@@ -2,3 +2,5 @@ module
 
 public import Mathlib.Tactic.Positivity.Basic
 public import Mathlib.Tactic.Positivity.Finset
+
+set_option linter.style.header false
diff --git a/Mathlib/Tactic/Ring.lean b/Mathlib/Tactic/Ring.lean
index 4bddcebb2e6a40..a0dab621a2ef7c 100644
--- a/Mathlib/Tactic/Ring.lean
+++ b/Mathlib/Tactic/Ring.lean
@@ -3,3 +3,5 @@ module
 public import Mathlib.Tactic.Ring.Basic
 public import Mathlib.Tactic.Ring.PNat
 public import Mathlib.Tactic.Ring.RingNF
+
+set_option linter.style.header false
diff --git a/Mathlib/Tactic/Translate/Core.lean b/Mathlib/Tactic/Translate/Core.lean
index a1b04042a52202..2f7ddc6de98496 100644
--- a/Mathlib/Tactic/Translate/Core.lean
+++ b/Mathlib/Tactic/Translate/Core.lean
@@ -291,14 +291,14 @@ structure Config : Type where
   /-- The given name of the target. -/
   tgt : Name := Name.anonymous
   /-- An optional doc string. -/
-  doc : Option String := none
+  doc : Option String := .none
   /-- If `allowAutoName` is `false` (default) then
   we check whether the given name can be auto-generated. -/
   allowAutoName : Bool := false
   /-- The arguments that should be reordered when translating, using cycle notation. -/
-  reorder? : Option Reorder := none
+  reorder? : Option Reorder := .none
   /-- The argument used to determine whether this constant should be translated. -/
-  relevantArg? : Option RelevantArg := none
+  relevantArg? : Option RelevantArg := .none
   /-- The attributes which we want to give to the original and translated declaration.
   For `simps` this will also add generated lemmas to the translation dictionary. -/
   attrs : Array Syntax := #[]
diff --git a/lake-manifest.json b/lake-manifest.json
index b5083d35a59ab6..dc38ffed83c002 100644
--- a/lake-manifest.json
+++ b/lake-manifest.json
@@ -5,10 +5,10 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "8629a535d10cd7edfbf1a2c5cdfbaeee135a62cd",
+   "rev": "c7314e41459a8c0aa8c9b610748c72292851625d",
    "name": "plausible",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "main",
+   "inputRev": "nightly-testing",
    "inherited": false,
    "configFile": "lakefile.toml"},
   {"url": "https://github.com/leanprover-community/LeanSearchClient",
@@ -25,7 +25,7 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "f7f57d837a219a8e298798faba94bc7082111a7d",
+   "rev": "f207d9fcf0cef00ba79962a33ef156061914d9c7",
    "name": "importGraph",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -65,7 +65,7 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "922c94b86687f3b7ab165d43ce9ddee610696d0c",
+   "rev": "4f2de985dc0dd8daac986dcdb4cc9ea38774d35a",
    "name": "batteries",
    "manifestFile": "lake-manifest.json",
    "inputRev": "nightly-testing",
@@ -75,10 +75,10 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover",
-   "rev": "06c8b4d690d9b7ef98d594672bbdaa618156215a",
+   "rev": "3de531c1135f5e3a01f3ac04830996fda476b28e",
    "name": "Cli",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "v4.29.0-rc4",
+   "inputRev": "v4.29.0-rc6",
    "inherited": true,
    "configFile": "lakefile.toml"}],
  "name": "mathlib",
diff --git a/lean-toolchain b/lean-toolchain
index fd315255c53152..a07c58f5e4e07a 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:nightly-2026-03-05
+leanprover/lean4:nightly-2026-03-09