diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e10518fa..aa633796 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,7 +24,7 @@ jobs:
         rust: ["stable"]
         include:
           - os: "ubuntu-latest"
-            rust: "1.82" # MSRV
+            rust: "1.83" # MSRV
           - os: "ubuntu-latest"
             rust: "nightly"
     steps:
diff --git a/Cargo.toml b/Cargo.toml
index ba6d12d8..f1d8cd5b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,7 +6,7 @@ resolver = "2"
 [workspace.package]
 version = "0.1.0"
 edition = "2021"
-rust-version = "1.82" # MSRV
+rust-version = "1.83" # MSRV
 authors = ["DaniPopes <57450786+DaniPopes@users.noreply.github.com>"]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/paradigmxyz/solar"
diff --git a/clippy.toml b/clippy.toml
index 7c844e9f..42cd954a 100644
--- a/clippy.toml
+++ b/clippy.toml
@@ -1,2 +1,2 @@
-msrv = "1.82"
+msrv = "1.83"
 allow-dbg-in-tests = true
diff --git a/crates/interface/src/source_map/file.rs b/crates/interface/src/source_map/file.rs
index 4bf1e7c2..0ed79795 100644
--- a/crates/interface/src/source_map/file.rs
+++ b/crates/interface/src/source_map/file.rs
@@ -196,8 +196,7 @@ impl std::error::Error for OffsetOverflowError {}
 
 impl From<OffsetOverflowError> for io::Error {
     fn from(e: OffsetOverflowError) -> Self {
-        // TODO(MSRV-1.83): Use `FileTooLarge`.
-        Self::new(io::ErrorKind::Other, e)
+        Self::new(io::ErrorKind::FileTooLarge, e)
     }
 }
 
diff --git a/crates/sema/src/builtins/mod.rs b/crates/sema/src/builtins/mod.rs
index 7e7168f2..42091a21 100644
--- a/crates/sema/src/builtins/mod.rs
+++ b/crates/sema/src/builtins/mod.rs
@@ -233,7 +233,7 @@ macro_rules! builtin_range_slice {
             let mut i = $first;
             let mut out = [Builtin::Blockhash; $last - $first];
             while i < $last {
-                out[i - $first] = Builtin::from_index_unwrap(i);
+                out[i - $first] = Builtin::from_index(i).unwrap();
                 i += 1;
             }
             out
@@ -276,15 +276,6 @@ impl Builtin {
         }
     }
 
-    // TODO(MSRV-1.83): Replace with .unwrap()
-    #[inline]
-    const fn from_index_unwrap(i: usize) -> Self {
-        match Self::from_index(i) {
-            Some(b) => b,
-            None => panic!(),
-        }
-    }
-
     /// Returns the global builtins.
     pub fn global() -> &'static [Self] {
         builtin_range_slice!(Self::FIRST_GLOBAL, Self::LAST_GLOBAL)