diff --git a/lib/std/http/Client.zig b/lib/std/http/Client.zig
index 3bacd86c33..e97b366370 100644
--- a/lib/std/http/Client.zig
+++ b/lib/std/http/Client.zig
@@ -625,6 +625,29 @@ pub const Request = struct {
         InvalidSignature,
         NotSquare,
         DiskQuota,
+        InvalidEnd,
+        Incomplete,
+        InvalidIpv4Mapping,
+        InvalidIPAddressFormat,
+        BadPathName,
+        DeviceBusy,
+        FileBusy,
+        FileLocksNotSupported,
+        InvalidHandle,
+        InvalidUtf8,
+        NameTooLong,
+        NoDevice,
+        PathAlreadyExists,
+        PipeBusy,
+        SharingViolation,
+        SymLinkLoop,
+        FileSystem,
+        InterfaceNotFound,
+        AlreadyBound,
+        FileDescriptorNotASocket,
+        NetworkSubsystemFailed,
+        NotDir,
+        ReadOnlyFileSystem,
     };
 
     pub fn read(req: *Request, buffer: []u8) ReadError!usize {
@@ -770,7 +793,8 @@ pub const Request = struct {
                     }
                 },
                 .chunk_data => {
-                    const sub_amt = @min(req.response.next_chunk_length, in.len);
+                    // TODO https://github.com/ziglang/zig/issues/14039
+                    const sub_amt = @intCast(usize, @min(req.response.next_chunk_length, in.len));
                     req.response.next_chunk_length -= sub_amt;
                     if (req.response.next_chunk_length > 0) {
                         if (in.ptr == buffer.ptr) {
diff --git a/lib/std/tar.zig b/lib/std/tar.zig
index 985749fd38..4f6a77c6ba 100644
--- a/lib/std/tar.zig
+++ b/lib/std/tar.zig
@@ -93,7 +93,7 @@ pub fn pipeToFileSystem(dir: std.fs.Dir, reader: anytype, options: Options) !voi
         start += 512;
         const file_size = try header.fileSize();
         const rounded_file_size = std.mem.alignForwardGeneric(u64, file_size, 512);
-        const pad_len = rounded_file_size - file_size;
+        const pad_len = @intCast(usize, rounded_file_size - file_size);
         const unstripped_file_name = try header.fullFileName(&file_name_buffer);
         switch (header.fileType()) {
             .directory => {
@@ -117,13 +117,15 @@ pub fn pipeToFileSystem(dir: std.fs.Dir, reader: anytype, options: Options) !voi
                         start = 0;
                     }
                     // Ask for the rounded up file size + 512 for the next header.
-                    const ask = @min(
+                    // TODO: https://github.com/ziglang/zig/issues/14039
+                    const ask = @intCast(usize, @min(
                         buffer.len - end,
                         rounded_file_size + 512 - file_off -| (end - start),
-                    );
+                    ));
                     end += try reader.readAtLeast(buffer[end..], ask);
                     if (end - start < ask) return error.UnexpectedEndOfStream;
-                    const slice = buffer[start..@min(file_size - file_off + start, end)];
+                    // TODO: https://github.com/ziglang/zig/issues/14039
+                    const slice = buffer[start..@intCast(usize, @min(file_size - file_off + start, end))];
                     try file.writeAll(slice);
                     file_off += slice.len;
                     start += slice.len;
@@ -136,8 +138,8 @@ pub fn pipeToFileSystem(dir: std.fs.Dir, reader: anytype, options: Options) !voi
                 }
             },
             .global_extended_header, .extended_header => {
-                start += rounded_file_size;
-                if (start > end) return error.TarHeadersTooBig;
+                if (start + rounded_file_size > end) return error.TarHeadersTooBig;
+                start = @intCast(usize, start + rounded_file_size);
             },
             .hard_link => return error.TarUnsupportedFileType,
             .symbolic_link => return error.TarUnsupportedFileType,