diff --git a/SphereEversion/Global/OneJetBundle.lean b/SphereEversion/Global/OneJetBundle.lean
index 8f1053dd..a3ff1705 100644
--- a/SphereEversion/Global/OneJetBundle.lean
+++ b/SphereEversion/Global/OneJetBundle.lean
@@ -156,6 +156,7 @@ instance (x : M × M') : Module 𝕜 (FJ¹MM' x) :=
 end
 
 set_option backward.isDefEq.respectTransparency false in
+set_option backward.isDefEq.respectTransparency.instanceSearchTypes false in
 instance : TopologicalSpace J¹MM' := by
   delta OneJetSpace OneJetBundle
   infer_instance
@@ -177,6 +178,7 @@ instance : ContMDiffVectorBundle ∞ (E →L[𝕜] E')
   infer_instance
 
 set_option backward.isDefEq.respectTransparency false in
+set_option backward.isDefEq.respectTransparency.instanceSearchTypes false in
 instance : ChartedSpace HJ J¹MM' := by
   delta OneJetSpace OneJetBundle
   infer_instance
@@ -641,11 +643,10 @@ theorem oneJetBundle_model_space_coe_chartAt (p : OneJetBundle I H I' H') :
 theorem oneJetBundle_model_space_coe_chartAt_symm (p : OneJetBundle I H I' H') :
     ((chartAt 𝓜 p).symm : 𝓜 → OneJetBundle I H I' H') =
       (Bundle.TotalSpace.toProd (H × H') (E →L[𝕜] E')).symm := by
-  ext x
+  ext x <;> rw [← OpenPartialHomeomorph.coe_toPartialEquiv_symm, oneJetBundle_model_space_chartAt]
+  · rfl
   · rfl
   · rfl
-  · rw [← OpenPartialHomeomorph.coe_toPartialEquiv_symm, oneJetBundle_model_space_chartAt]
-    rfl
 
 variable (I I')
 
diff --git a/SphereEversion/ToMathlib/Analysis/Convex/Basic.lean b/SphereEversion/ToMathlib/Analysis/Convex/Basic.lean
index 1120e1b5..169de34d 100644
--- a/SphereEversion/ToMathlib/Analysis/Convex/Basic.lean
+++ b/SphereEversion/ToMathlib/Analysis/Convex/Basic.lean
@@ -128,7 +128,8 @@ theorem ReallyConvex.add_mem [IsOrderedRing 𝕜] (hs : ReallyConvex 𝕜 s) {w
     w₁ • z₁ + w₂ • z₂ ∈ s := by
   cases subsingleton_or_nontrivial 𝕜
   · have := Module.subsingleton 𝕜 E
-    rwa [Subsingleton.mem_iff_nonempty] at hz₁ ⊢
+    rw [Subsingleton.mem_iff_nonempty] at hz₁ ⊢
+    assumption
   suffices ∑ b : Bool, cond b w₁ w₂ • cond b z₁ z₂ ∈ s by simpa using this
   apply hs.sum_mem <;> simp [*]
 
diff --git a/lake-manifest.json b/lake-manifest.json
index cb0d5129..ffa681f5 100644
--- a/lake-manifest.json
+++ b/lake-manifest.json
@@ -1,4 +1,4 @@
-{"version": "1.2.0",
+{"version": "1.3.0",
  "packagesDir": ".lake/packages",
  "packages":
  [{"url": "https://github.com/PatrickMassot/checkdecls.git",
@@ -15,17 +15,17 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "5ed2965256430c3649e86755f9576b54eca72435",
+   "rev": "5e0c4e5239cb0a2d86d68a884bf52cfd963fce22",
    "name": "mathlib",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "v4.34.0",
+   "inputRev": "master",
    "inherited": false,
    "configFile": "lakefile.lean"},
   {"url": "https://github.com/leanprover-community/plausible",
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "118aa17ee84656b8bd727fef7c458ee8c833385c",
+   "rev": "fb13df72ecefd8ddbf9291021d7f33a8673eb57b",
    "name": "plausible",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -35,7 +35,7 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "ddf04cf3949fa556442341e87d47f9f6e6074707",
+   "rev": "29ff470276c725ae01505d55b17148c18fc7dfd3",
    "name": "LeanSearchClient",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -45,7 +45,7 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "e928b72544873815af278d38681b31c0293588e3",
+   "rev": "7e81a29bda33a6b257bd37557a6aa6aebe175d96",
    "name": "importGraph",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -55,7 +55,7 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "106ff4fafc74ef4ac99d81dbf3ab399118f497a5",
+   "rev": "c643bbb3c24f8a25f9c14e3a6b1ceb13d01f3de1",
    "name": "proofwidgets",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -65,7 +65,7 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "355695d523e41d0554926416cba2a2b3544fbbc9",
+   "rev": "a90fbf7b02ff06a0deebf74088dff9e5fe02c9ea",
    "name": "aesop",
    "manifestFile": "lake-manifest.json",
    "inputRev": "master",
@@ -75,7 +75,7 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "6a489d9af5d0c47e5b259e2e8bcdfc1811b5a259",
+   "rev": "37b0ba0b26109cf9f9c541f0f9557e50cfa1a3b9",
    "name": "Qq",
    "manifestFile": "lake-manifest.json",
    "inputRev": "master",
@@ -85,7 +85,7 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "f2effa3d803fda822b1f97b806c47cf2adfbcbc2",
+   "rev": "33131f4fb10067cb3009bf4db615d9680c1ccd6b",
    "name": "batteries",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -95,10 +95,10 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover",
-   "rev": "e92c9f15fdfacc8536f31cfb3b7ad26c3c8cd204",
+   "rev": "843844fa601dd56767b1eb22b7ada5b64d5e567a",
    "name": "Cli",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "v4.34.0",
+   "inputRev": "v4.35.0-rc3",
    "inherited": true,
    "configFile": "lakefile.toml"}],
  "name": "SphereEversion",
diff --git a/lakefile.toml b/lakefile.toml
index 0247e049..f2a95077 100644
--- a/lakefile.toml
+++ b/lakefile.toml
@@ -11,7 +11,6 @@ weak.linter.style.header = false
 [[require]]
 name = "mathlib"
 scope = "leanprover-community"
-rev = "v4.34.0"
 
 [[require]]
 name = "checkdecls"
diff --git a/lean-toolchain b/lean-toolchain
index 12359f92..9d74fe15 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:v4.34.0
+leanprover/lean4:v4.35.0-rc3
\ No newline at end of file