diff --git a/lib/std/Io/Threaded.zig b/lib/std/Io/Threaded.zig
index bd40bdf4ca082e0d4e9052d2dafad09bc10dfdb1..6ef8d5d7f51cc9376cc49de656332e0e588c8d5b 100644
--- a/lib/std/Io/Threaded.zig
+++ b/lib/std/Io/Threaded.zig
@@ -16191,7 +16191,7 @@ fn windowsCreateProcessPathExt(
     // we iterate the matches and take note of any that are either the unappended version,
     // or a version with a supported PATHEXT appended. We then try calling CreateProcessW
     // with the found versions in the appropriate order.
-    var dir = dir: {
+    const dir = dir: {
         // needs to be null-terminated
         try dir_buf.append(arena, 0);
         defer dir_buf.shrinkRetainingCapacity(dir_path_len);
diff --git a/lib/std/Io/Uring.zig b/lib/std/Io/Uring.zig
index ce5ba144acfea1adc7da7075269695719aff0a24..9597638e1e861bf1ea165ddf63db345de62139df 100644
--- a/lib/std/Io/Uring.zig
+++ b/lib/std/Io/Uring.zig
@@ -2427,7 +2427,7 @@ fn batchDrainReady(batch: *Io.Batch) Io.Timeout.Error!void {
                 break :cond true;
             },
         }) {
-            var operation_userdata: *Io.Operation.Storage.Pending.Userdata =
+            const operation_userdata: *Io.Operation.Storage.Pending.Userdata =
                 @ptrFromInt(next & ~@as(usize, 0b11));
             next = operation_userdata[0];
             const completion: Completion = .{
diff --git a/lib/std/fs/path.zig b/lib/std/fs/path.zig
index cd189cc12246df7437c9a8d21d386afadebc980f..3aff5bd9f1f976affcad5792bad096ee5d6486d6 100644
--- a/lib/std/fs/path.zig
+++ b/lib/std/fs/path.zig
@@ -814,8 +814,8 @@ fn compareDiskDesignators(comptime T: type, kind: DiskDesignatorKind, p1: []cons
             return eql(drive_letter1, drive_letter2);
         },
         .unc => {
-            var unc1 = parseUNC(T, p1);
-            var unc2 = parseUNC(T, p2);
+            const unc1 = parseUNC(T, p1);
+            const unc2 = parseUNC(T, p2);
 
             return eql(unc1.server, unc2.server) and
                 eql(unc1.share, unc2.share);
diff --git a/src/codegen/wasm/CodeGen.zig b/src/codegen/wasm/CodeGen.zig
index 00d4d3c5bc8c186ef10c41d5d9c48325bcaa0bd6..c97892a10c22cacc4b7ecc3422694793fc1b7221 100644
--- a/src/codegen/wasm/CodeGen.zig
+++ b/src/codegen/wasm/CodeGen.zig
@@ -3477,7 +3477,7 @@ fn intSubOverflow(cg: *CodeGen, int_ty: IntType, lhs: WValue, rhs: WValue) Inner
 }
 
 fn intMulOverflow(cg: *CodeGen, int_ty: IntType, lhs: WValue, rhs: WValue) InnerError!OverflowResult {
-    var overflow_bit = try cg.allocLocal(Type.u32);
+    const overflow_bit = try cg.allocLocal(Type.u32);
     try cg.addImm32(0);
     try cg.addLocal(.local_set, overflow_bit.local.value);
 
diff --git a/src/main.zig b/src/main.zig
index f1432de74a8916d74a3dfe90a76b13ea67f4def3..717fe576dcb25574e23d7f5aed8f8007dd3f16f1 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -4648,7 +4648,7 @@ fn runOrTestHotSwap(
         try argv.appendSlice(all_args[i..]);
     }
 
-    var child = try std.process.spawn(io, .{
+    const child = try std.process.spawn(io, .{
         .argv = argv.items,
         .stdin = .inherit,
         .stdout = .inherit,