diff --git a/build.zig.version b/build.zig.version
index 930e300..3cfe6f2 100644
--- a/build.zig.version
+++ b/build.zig.version
@@ -1 +1 @@
-0.14.1
+0.15.0-dev.703+597dd328e
diff --git a/build.zig.zon b/build.zig.zon
index feb6ad0..e66f66f 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -27,8 +27,8 @@
             .hash = "fuzzig-0.1.1-AAAAALNIAQBmbHr-MPalGuR393Vem2pTQXI7_LXeNJgX",
         },
         .vaxis = .{
-            .url = "https://github.com/neurocyte/libvaxis/archive/6137cb4c44a7350996f0946a069739e5075d1f23.tar.gz",
-            .hash = "vaxis-0.1.0-BWNV_HwOCQCw5wTV63hQGSc1QJzsNcytH6sGf1GBc0hP",
+            .url = "https://github.com/neurocyte/libvaxis/archive/64a29f4f91292bc79dc9afb9a254cbdfb35e29a6.tar.gz",
+            .hash = "vaxis-0.1.0-BWNV_KEOCQCzedUR1prWhPUcgsRmw8f-r5JBc3s4DLJf",
         },
         .zeit = .{
             .url = "https://github.com/rockorager/zeit/archive/8fd203f85f597f16e0a525c1f1ca1e0bffded809.tar.gz",
diff --git a/src/buffer/Buffer.zig b/src/buffer/Buffer.zig
index c90bf76..b86af65 100644
--- a/src/buffer/Buffer.zig
+++ b/src/buffer/Buffer.zig
@@ -1222,6 +1222,7 @@ pub const LoadFromFileError = error{
     LockViolation,
     ProcessNotFound,
     Canceled,
+    PermissionDenied,
 };
 
 pub fn load_from_file(
@@ -1327,6 +1328,8 @@ pub const StoreToFileError = error{
     SystemResources,
     Unexpected,
     WouldBlock,
+    PermissionDenied,
+    MessageTooBig,
 };
 
 pub fn store_to_existing_file_const(self: *const Self, file_path: []const u8) StoreToFileError!void {