diff --git a/build.zig b/build.zig
index c1fa711..9f57029 100644
--- a/build.zig
+++ b/build.zig
@@ -24,7 +24,7 @@ pub fn build(b: *std.Build) !void {
     const optimize = b.standardOptimizeOption(.{});
 
     // Add the gpio module so it can be used by the package manager
-    var gpio_module = b.createModule(.{ .source_file = .{ .path = "src/index.zig" } });
+    const gpio_module = b.createModule(.{ .root_source_file = .{ .path = "src/index.zig" } });
     try b.modules.put(b.dupe("gpio"), gpio_module);
 
     // Create a step to build all the examples
@@ -41,7 +41,7 @@ pub fn build(b: *std.Build) !void {
             .target = target,
             .optimize = optimize,
         });
-        exe.addModule("gpio", gpio_module);
+        exe.root_module.addImport("gpio", gpio_module);
 
         const build_step = b.addInstallArtifact(exe, .{});
         step.dependOn(&build_step.step);
@@ -62,7 +62,7 @@ pub fn build(b: *std.Build) !void {
             .target = target,
             .optimize = optimize,
         });
-        exe.addModule("gpio", gpio_module);
+        exe.root_module.addImport("gpio", gpio_module);
 
         const build_step = b.addInstallArtifact(exe, .{});
         step.dependOn(&build_step.step);
diff --git a/src/cmd/detect.zig b/src/cmd/detect.zig
index c8de3a3..e8a1e6c 100644
--- a/src/cmd/detect.zig
+++ b/src/cmd/detect.zig
@@ -2,7 +2,7 @@ const std = @import("std");
 const gpio = @import("gpio");
 
 pub fn main() !void {
-    var iter_dir = try std.fs.openIterableDirAbsolute("/dev", .{});
+    var iter_dir = try std.fs.openDirAbsolute("/dev", .{ .iterate = true });
     defer iter_dir.close();
 
     const stdout = std.io.getStdOut().writer();
@@ -11,7 +11,7 @@ pub fn main() !void {
     while (try iter.next()) |entry| {
         if (!hasPrefix(entry.name, "gpiochip")) continue;
 
-        const fl = try iter_dir.dir.openFile(entry.name, .{});
+        const fl = try iter_dir.openFile(entry.name, .{});
         var chip = try gpio.getChipByFd(fl.handle);
         defer chip.close(); // This will close the fd
 
diff --git a/src/cmd/get.zig b/src/cmd/get.zig
index f2860ae..894d7b2 100644
--- a/src/cmd/get.zig
+++ b/src/cmd/get.zig
@@ -16,7 +16,7 @@ pub fn main() !void {
         return error.InsufficientArguments;
     }
 
-    var path: []const u8 = if (hasPrefix(args[1], "gpiochip"))
+    const path: []const u8 = if (hasPrefix(args[1], "gpiochip"))
         try std.mem.concat(alloc, u8, &.{ "/dev/", args[1] })
     else
         try std.mem.concat(alloc, u8, &.{ "/dev/gpiochip", args[1] });
@@ -32,7 +32,7 @@ pub fn main() !void {
     // Iterate over each argument starting from the second one
     for (args[2..args.len]) |argument| {
         // Parse each argument as an integer and add it to offsets
-        var offset = try std.fmt.parseUnsigned(u32, argument, 10);
+        const offset = try std.fmt.parseUnsigned(u32, argument, 10);
         try offsets.append(offset);
     }
 
diff --git a/src/cmd/info.zig b/src/cmd/info.zig
index 98cd0a4..f8200a3 100644
--- a/src/cmd/info.zig
+++ b/src/cmd/info.zig
@@ -18,7 +18,7 @@ pub fn main() !void {
 
         // If the argument has the "gpiochip" prefix,
         // just use it unchanged. Otherwise, add the prefix.
-        var filename: []const u8 = if (hasGpiochip)
+        const filename: []const u8 = if (hasGpiochip)
             argument
         else
             try std.mem.concat(alloc, u8, &.{ "gpiochip", argument });
diff --git a/src/cmd/set.zig b/src/cmd/set.zig
index 5bc44f7..ff7b6fb 100644
--- a/src/cmd/set.zig
+++ b/src/cmd/set.zig
@@ -16,7 +16,7 @@ pub fn main() !void {
         return error.InsufficientArguments;
     }
 
-    var path: []const u8 = if (hasPrefix(args[1], "gpiochip"))
+    const path: []const u8 = if (hasPrefix(args[1], "gpiochip"))
         try std.mem.concat(alloc, u8, &.{ "/dev/", args[1] })
     else
         try std.mem.concat(alloc, u8, &.{ "/dev/gpiochip", args[1] });
@@ -34,8 +34,8 @@ pub fn main() !void {
         // Get the index of the equals sign in the argument
         const eqIndex = std.mem.indexOf(u8, argument, "=") orelse return error.InvalidArgument;
         // Parse each argument's offset and value, and add it to the values map
-        var offset = try std.fmt.parseUnsigned(u32, argument[0..eqIndex], 10);
-        var value = try std.fmt.parseUnsigned(u1, argument[eqIndex + 1 .. argument.len], 10);
+        const offset = try std.fmt.parseUnsigned(u32, argument[0..eqIndex], 10);
+        const value = try std.fmt.parseUnsigned(u1, argument[eqIndex + 1 .. argument.len], 10);
         try values.put(offset, value != 0);
     }
 
diff --git a/src/gpio.zig b/src/gpio.zig
index 3083d91..62dcdae 100644
--- a/src/gpio.zig
+++ b/src/gpio.zig
@@ -3,19 +3,19 @@ const gpio = @import("index.zig");
 
 /// Opens the file at path and uses the file descriptor to get the gpiochip.
 pub fn getChip(path: []const u8) !Chip {
-    var fl = try std.fs.openFileAbsolute(path, .{});
+    const fl = try std.fs.openFileAbsolute(path, .{});
     return try getChipByFd(fl.handle);
 }
 
 /// Same as `getChip` but the `path` parameter is null-terminated.
 pub fn getChipZ(path: [*:0]const u8) !Chip {
-    var fl = try std.fs.openFileAbsoluteZ(path, .{});
+    const fl = try std.fs.openFileAbsoluteZ(path, .{});
     return try getChipByFd(fl.handle);
 }
 
 /// Returns a `chip` with the given file descriptor.
-pub fn getChipByFd(fd: std.os.fd_t) !Chip {
-    var info = try gpio.uapi.getChipInfo(fd);
+pub fn getChipByFd(fd: std.posix.fd_t) !Chip {
+    const info = try gpio.uapi.getChipInfo(fd);
     return Chip{
         .name = info.name,
         .label = info.label,
@@ -35,7 +35,7 @@ pub const Chip = struct {
     /// If it isn't set, "zig-gpio" will be used instead.
     consumer: ?[gpio.uapi.MAX_NAME_SIZE]u8 = null,
     /// The file descriptor of the `gpiochip` device.
-    handle: std.os.fd_t,
+    handle: std.posix.fd_t,
     // The amount of lines available under this device.
     lines: u32,
     closed: bool = false,
@@ -71,7 +71,7 @@ pub const Chip = struct {
 
     /// Requests and returns a single line at the given `offset`, from the given `chip`.
     pub fn requestLine(self: Chip, offset: u32, flags: gpio.uapi.LineFlags) !Line {
-        var l = try self.requestLines(&.{offset}, flags);
+        const l = try self.requestLines(&.{offset}, flags);
         return Line{ .lines = l };
     }
 
@@ -108,14 +108,14 @@ pub const Chip = struct {
     pub fn close(self: *Chip) void {
         if (self.closed) return;
         self.closed = true;
-        std.os.close(self.handle);
+        std.posix.close(self.handle);
     }
 };
 
 /// Represents a collection of lines requested from a `chip`.
 pub const Lines = struct {
     /// The file descriptor of the lines.
-    handle: std.os.fd_t,
+    handle: std.posix.fd_t,
     /// The amount of lines being controlled.
     num_lines: u32,
     /// The offsets of the lines being controlled.
@@ -254,7 +254,7 @@ pub const Lines = struct {
     pub fn close(self: *Lines) void {
         if (self.closed) return;
         self.closed = true;
-        std.os.close(self.handle);
+        std.posix.close(self.handle);
     }
 };
 
diff --git a/src/uapi.zig b/src/uapi.zig
index 3a74dc4..6ec9ecc 100644
--- a/src/uapi.zig
+++ b/src/uapi.zig
@@ -176,20 +176,20 @@ pub const LineInfoChanged = extern struct {
 /// Returns an error based on the given return code
 fn handleErrno(ret: usize) !void {
     if (ret == 0) return;
-    return switch (std.os.errno(ret)) {
+    return switch (std.posix.errno(ret)) {
         .BUSY => error.DeviceIsBusy,
         .INVAL => error.InvalidArgument,
         .BADF => error.BadFileDescriptor,
         .NOTTY => error.InappropriateIOCTLForDevice,
         .IO => error.IOError,
         .FAULT => unreachable,
-        else => |err| return std.os.unexpectedErrno(err),
+        else => |err| return std.posix.unexpectedErrno(err),
     };
 }
 
 /// Executes `GPIO_GET_CHIPINFO_IOCTL` on the given fd and returns the resulting
 /// `ChipInfo` value
-pub fn getChipInfo(fd: std.os.fd_t) !ChipInfo {
+pub fn getChipInfo(fd: std.posix.fd_t) !ChipInfo {
     const req = std.os.linux.IOCTL.IOR(0xB4, 0x01, ChipInfo);
     var info = std.mem.zeroes(ChipInfo);
     try handleErrno(std.os.linux.ioctl(fd, req, @intFromPtr(&info)));
@@ -198,7 +198,7 @@ pub fn getChipInfo(fd: std.os.fd_t) !ChipInfo {
 
 /// Executes `GPIO_V2_GET_LINEINFO_IOCTL` on the given fd and returns the resulting
 /// `LineInfo` value
-pub fn getLineInfo(fd: std.os.fd_t, offset: u32) !LineInfo {
+pub fn getLineInfo(fd: std.posix.fd_t, offset: u32) !LineInfo {
     const req = std.os.linux.IOCTL.IOWR(0xB4, 0x05, LineInfo);
     var info = std.mem.zeroes(LineInfo);
     info.offset = offset;
@@ -208,7 +208,7 @@ pub fn getLineInfo(fd: std.os.fd_t, offset: u32) !LineInfo {
 
 /// Executes `GPIO_V2_GET_LINEINFO_WATCH_IOCTL` on the given fd and returns the resulting
 /// `LineInfo` value
-pub fn watchLineInfo(fd: std.os.fd_t, offset: u32) !LineInfo {
+pub fn watchLineInfo(fd: std.posix.fd_t, offset: u32) !LineInfo {
     const req = std.os.linux.IOCTL.IOWR(0xB4, 0x06, LineInfo);
     var info = std.mem.zeroes(LineInfo);
     info.offset = offset;
@@ -217,14 +217,14 @@ pub fn watchLineInfo(fd: std.os.fd_t, offset: u32) !LineInfo {
 }
 
 /// Executes `GPIO_GET_LINEINFO_UNWATCH_IOCTL` on the given fd
-pub fn unwatchLineInfo(fd: std.os.fd_t, offset: u32) !void {
+pub fn unwatchLineInfo(fd: std.posix.fd_t, offset: u32) !void {
     const req = std.os.linux.IOCTL.IOWR(0xB4, 0x0C, u32);
     try handleErrno(std.os.linux.ioctl(fd, req, @intFromPtr(&offset)));
 }
 
 /// Executes `GPIO_V2_GET_LINE_IOCTL` on the given fd and returns the resulting
 /// line descriptor
-pub fn getLine(fd: std.os.fd_t, lr: LineRequest) !std.os.fd_t {
+pub fn getLine(fd: std.posix.fd_t, lr: LineRequest) !std.posix.fd_t {
     const lrp = &lr;
     const req = std.os.linux.IOCTL.IOWR(0xB4, 0x07, LineRequest);
     try handleErrno(std.os.linux.ioctl(fd, req, @intFromPtr(lrp)));
@@ -233,7 +233,7 @@ pub fn getLine(fd: std.os.fd_t, lr: LineRequest) !std.os.fd_t {
 
 /// Executes `GPIO_V2_LINE_GET_VALUES_IOCTL` on the given fd with the given mask,
 /// and returns a bitset representing all the line values.
-pub fn getLineValues(fd: std.os.fd_t, mask: LineValueBitset) !LineValueBitset {
+pub fn getLineValues(fd: std.posix.fd_t, mask: LineValueBitset) !LineValueBitset {
     var vals = LineValues{ .mask = mask };
     const req = std.os.linux.IOCTL.IOWR(0xB4, 0x0E, LineValues);
     try handleErrno(std.os.linux.ioctl(fd, req, @intFromPtr(&vals)));
@@ -241,13 +241,13 @@ pub fn getLineValues(fd: std.os.fd_t, mask: LineValueBitset) !LineValueBitset {
 }
 
 /// Executes `GPIO_V2_LINE_SET_VALUES_IOCTL` on the given fd
-pub fn setLineValues(fd: std.os.fd_t, lv: LineValues) !void {
+pub fn setLineValues(fd: std.posix.fd_t, lv: LineValues) !void {
     const req = std.os.linux.IOCTL.IOWR(0xB4, 0x0F, LineValues);
     try handleErrno(std.os.linux.ioctl(fd, req, @intFromPtr(&lv)));
 }
 
 /// Executes `GPIO_V2_LINE_SET_CONFIG_IOCTL` on the given fd
-pub fn setLineConfig(fd: std.os.fd_t, lc: LineConfig) !void {
+pub fn setLineConfig(fd: std.posix.fd_t, lc: LineConfig) !void {
     const req = std.os.linux.IOCTL.IOWR(0xB4, 0x0D, LineConfig);
     try handleErrno(std.os.linux.ioctl(fd, req, @intFromPtr(&lc)));
 }