diff --git a/FltRegular/NumberTheory/KummersLemma/KummersLemma.lean b/FltRegular/NumberTheory/KummersLemma/KummersLemma.lean
index 3d667dd7..084d2903 100644
--- a/FltRegular/NumberTheory/KummersLemma/KummersLemma.lean
+++ b/FltRegular/NumberTheory/KummersLemma/KummersLemma.lean
@@ -47,6 +47,7 @@ theorem not_for_all_zeta_sub_one_pow_dvd_sub_one_of_pow_ne (u : (𝓞 K)ˣ)
 -- the 𝑝-th cyclotomic field) and 𝜉 a primitive 𝑝-th root of unity;
 -- if a unit 𝑢∈𝐐(𝜉) is congruent to an integer modulo 𝑝, then 𝑢 is a 𝑝-th power in 𝐐(𝜉).
 set_option synthInstance.maxHeartbeats 40000 in
+set_option maxHeartbeats 400000 in
 theorem eq_pow_prime_of_unit_of_congruent (u : (𝓞 K)ˣ)
     (hcong : ∃ n : ℤ, (p : 𝓞 K) ∣ (u - n : 𝓞 K)) :
     ∃ v, u = v ^ (p : ℕ) := by
@@ -55,7 +56,7 @@ theorem eq_pow_prime_of_unit_of_congruent (u : (𝓞 K)ˣ)
   obtain ⟨x, hx⟩ : (p : 𝓞 K) ∣ (↑(u ^ (p - 1 : ℕ)) : 𝓞 K) - 1 := by
     obtain ⟨n, hn⟩ := hcong
     have hn' : (p : ℤ) ∣ n ^ (p - 1 : ℕ) - 1 := by
-      refine Int.modEq_iff_dvd.mp (Int.ModEq.pow_card_sub_one_eq_one hpri.out (n := n) ?_).symm
+      refine Int.modEq_iff_dvd.mp (Int.ModEq.pow_card_sub_one_eq_one hpri.out ?_).symm
       rw [isCoprime_comm, (Nat.prime_iff_prime_int.mp hpri.out).coprime_iff_not_dvd]
       intro h
       replace h := _root_.map_dvd (Int.castRingHom (𝓞 K)) h
diff --git a/lake-manifest.json b/lake-manifest.json
index e620906d..062e0939 100644
--- a/lake-manifest.json
+++ b/lake-manifest.json
@@ -15,7 +15,7 @@
    "type": "git",
    "subDir": null,
    "scope": "",
-   "rev": "8e459c606cbf19248c6a59956570f051f05e6067",
+   "rev": "7edf946a4217aa3aa911290811204096e8464ada",
    "name": "checkdecls",
    "manifestFile": "lake-manifest.json",
    "inputRev": "master",
@@ -25,7 +25,7 @@
    "type": "git",
    "subDir": null,
    "scope": "",
-   "rev": "1ec33a404152f54bbabe1162c3dfa356a6f8b0ab",
+   "rev": "67d092e380faf850fd6a1febf81c27fb33c6c5c8",
    "name": "mathlib",
    "manifestFile": "lake-manifest.json",
    "inputRev": null,
@@ -135,7 +135,7 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "7805acf1864ba1a2e359f86a8f092ccf1438ad83",
+   "rev": "c016aa9938c4cedc9b7066099f99bcae1b1af625",
    "name": "batteries",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",