diff --git a/app/AppGroup.m b/app/AppGroup.m
index 8d055e9e..53541f46 100644
--- a/app/AppGroup.m
+++ b/app/AppGroup.m
@@ -33,7 +33,7 @@ struct cs_entitlements {
     char entitlements[];
 };
 
-static NSDictionary *AppEntitlements() {
+static NSDictionary *AppEntitlements(void) {
     static NSDictionary *entitlements;
     if (entitlements != nil)
         return entitlements;
@@ -101,7 +101,7 @@ NSArray<NSString *> *CurrentAppGroups(void) {
     return AppEntitlements()[@"com.apple.security.application-groups"];
 }
 
-NSURL *ContainerURL() {
+NSURL *ContainerURL(void) {
     NSString *appGroup = CurrentAppGroups()[0];
     return [NSFileManager.defaultManager containerURLForSecurityApplicationGroupIdentifier:appGroup];
 }
diff --git a/app/CurrentRoot.m b/app/CurrentRoot.m
index 5d399740..51beb517 100644
--- a/app/CurrentRoot.m
+++ b/app/CurrentRoot.m
@@ -45,7 +45,7 @@ static int remove_directory(const char *path) {
 #define remove_directory linux_remove_directory
 #endif
 
-void FsInitialize() {
+void FsInitialize(void) {
     // /ish/version is the last ish version that opened this root. Used to migrate the filesystem.
     char buf[1000];
     ssize_t n = read_file("/ish/version", buf, sizeof(buf));
@@ -76,15 +76,15 @@ void FsInitialize() {
     }
 }
 
-bool FsIsManaged() {
+bool FsIsManaged(void) {
     return fs_ish_version != 0;
 }
 
-bool FsNeedsRepositoryUpdate() {
+bool FsNeedsRepositoryUpdate(void) {
     return FsIsManaged() && fs_ish_apk_version < COMPATIBLE_APK_VERSION;
 }
 
-void FsUpdateOnlyRepositoriesFile() {
+void FsUpdateOnlyRepositoriesFile(void) {
     NSURL *repositories = [NSBundle.mainBundle URLForResource:@"repositories" withExtension:@"txt"];
     if (repositories != nil) {
         NSMutableData *repositoriesData = [@"# This file contains pinned repositories managed by iSH. If the /ish directory\n"
@@ -95,7 +95,7 @@ void FsUpdateOnlyRepositoriesFile() {
     }
 }
 
-void FsUpdateRepositories() {
+void FsUpdateRepositories(void) {
     NSString *currentVersion = NSBundle.mainBundle.infoDictionary[(__bridge NSString *) kCFBundleVersionKey];
     NSString *currentVersionFile = [NSString stringWithFormat:@"%@\n", currentVersion];
     FsUpdateOnlyRepositoriesFile();
diff --git a/app/Roots.m b/app/Roots.m
index 51a6e1d0..bb77b40a 100644
--- a/app/Roots.m
+++ b/app/Roots.m
@@ -11,7 +11,7 @@
 #import "NSObject+SaneKVO.h"
 #include "tools/fakefs.h"
 
-static NSURL *RootsDir() {
+static NSURL *RootsDir(void) {
     static NSURL *rootsDir;
     static dispatch_once_t token;
     dispatch_once(&token, ^{
diff --git a/app/hook.c b/app/hook.c
index a488116d..903b054a 100644
--- a/app/hook.c
+++ b/app/hook.c
@@ -89,7 +89,7 @@ void *exception_handler(void *unused) {
     abort();
 }
 
-static bool initialize_if_needed() {
+static bool initialize_if_needed(void) {
     if (initialized) {
         return true;
     }
diff --git a/app/iOSFS.m b/app/iOSFS.m
index 90414d06..de6923f7 100644
--- a/app/iOSFS.m
+++ b/app/iOSFS.m
@@ -102,10 +102,10 @@ static NSString *const kMountBookmarks = @"iOS Mount Bookmarks";
 // To avoid locking issues, only access from the main thread
 static NSMutableDictionary<NSString *, NSData *> *ios_mount_bookmarks;
 static bool mount_from_bookmarks = false; // This is a hack because I am bad at parameter passing
-static void sync_bookmarks() {
+static void sync_bookmarks(void) {
     [NSUserDefaults.standardUserDefaults setObject:ios_mount_bookmarks forKey:kMountBookmarks];
 }
-void iosfs_init() {
+void iosfs_init(void) {
     ios_mount_bookmarks = [NSUserDefaults.standardUserDefaults dictionaryForKey:kMountBookmarks].mutableCopy;
     if (ios_mount_bookmarks == nil)
         ios_mount_bookmarks = [NSMutableDictionary new];
diff --git a/deps/linux b/deps/linux
index 5cf14a7b..b5c2eb8b 160000
--- a/deps/linux
+++ b/deps/linux
@@ -1 +1 @@
-Subproject commit 5cf14a7b3ebd2995e084551e537e0c9c0053cec3
+Subproject commit b5c2eb8b25563cd223a04943b2ed2ba031232476