diff --git a/FltRegular/FltThree/OddPrimeOrFour.lean b/FltRegular/FltThree/OddPrimeOrFour.lean
index 9b80fdfb..44be6e16 100644
--- a/FltRegular/FltThree/OddPrimeOrFour.lean
+++ b/FltRegular/FltThree/OddPrimeOrFour.lean
@@ -117,8 +117,8 @@ theorem factors_unique_prod' :
 noncomputable def oddFactors (x : ℕ) :=
   Multiset.filter Odd (UniqueFactorizationMonoid.normalizedFactors x)
 
-theorem oddFactors.zero : oddFactors 0 = 0 :=
-  rfl
+theorem oddFactors.zero : oddFactors 0 = 0 := by
+  simp [oddFactors]
 
 theorem oddFactors.not_two_mem (x : ℕ) : 2 ∉ oddFactors x := by
   simp [oddFactors]
@@ -136,8 +136,8 @@ theorem evenFactorExp.def (x : ℕ) :
     evenFactorExp x = Multiset.count 2 (UniqueFactorizationMonoid.normalizedFactors x) :=
   rfl
 
-theorem evenFactorExp.zero : evenFactorExp 0 = 0 :=
-  rfl
+theorem evenFactorExp.zero : evenFactorExp 0 = 0 := by
+  simp [evenFactorExp]
 
 theorem evenFactorExp.pow (z : ℕ) (n : ℕ) : evenFactorExp (z ^ n) = n * evenFactorExp z :=
   by
diff --git a/lake-manifest.json b/lake-manifest.json
index a209ffcb..cf54dfaf 100644
--- a/lake-manifest.json
+++ b/lake-manifest.json
@@ -4,7 +4,7 @@
  [{"url": "https://github.com/leanprover/std4",
    "type": "git",
    "subDir": null,
-   "rev": "ff9850c4726f6b9fb8d8e96980c3fcb2900be8bd",
+   "rev": "f3447c3732c9d6e8df3bdad78e5ecf7e8b353bbc",
    "name": "std",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -22,7 +22,7 @@
   {"url": "https://github.com/leanprover-community/aesop",
    "type": "git",
    "subDir": null,
-   "rev": "056ca0fa8f5585539d0b940f532d9750c3a2270f",
+   "rev": "8be30c25e3caa06937feeb62f7ca898370f80ee9",
    "name": "aesop",
    "manifestFile": "lake-manifest.json",
    "inputRev": "master",
@@ -40,7 +40,7 @@
   {"url": "https://github.com/leanprover/lean4-cli",
    "type": "git",
    "subDir": null,
-   "rev": "a751d21d4b68c999accb6fc5d960538af26ad5ec",
+   "rev": "be8fa79a28b8b6897dce0713ef50e89c4a0f6ef5",
    "name": "Cli",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -49,7 +49,7 @@
   {"url": "https://github.com/leanprover-community/import-graph.git",
    "type": "git",
    "subDir": null,
-   "rev": "64d082eeaad1a8e6bbb7c23b7a16b85a1715a02f",
+   "rev": "bbcffbcc19d69e13d5eea716283c76169db524ba",
    "name": "importGraph",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -58,7 +58,7 @@
   {"url": "https://github.com/leanprover-community/mathlib4.git",
    "type": "git",
    "subDir": null,
-   "rev": "f884087a041da7998696e87352f6f06e2e5f5713",
+   "rev": "6d1dffa1281a6e231f594e4c49ec01bc3ad9974e",
    "name": "mathlib",
    "manifestFile": "lake-manifest.json",
    "inputRev": null,