diff --git a/runtime/filetype.vim b/runtime/filetype.vim
index c25b89f..54bc7a5 100644
--- a/runtime/filetype.vim
+++ b/runtime/filetype.vim
@@ -1998,9 +1998,8 @@
 " (patterns ending in a start further below)
 au BufNewFile,BufRead .login,.cshrc,csh.cshrc,csh.login,csh.logout,*.csh,.alias  call dist#ft#CSH()
 
-" Zig and Zir (Zig Intermediate Representation)
-au BufNewFile,BufRead *.zig			setf zig
-au BufNewFile,BufRead *.zir			setf zir
+" Zig and Zig Object Notation (ZON)
+au BufNewFile,BufRead *.zig,*.zon		setf zig
 
 " Zserio
 au BufNewFile,BufRead *.zs			setf zserio
diff --git a/runtime/ftplugin/zig.vim b/runtime/ftplugin/zig.vim
index cfd7102..291fe44 100644
--- a/runtime/ftplugin/zig.vim
+++ b/runtime/ftplugin/zig.vim
@@ -28,7 +28,7 @@
 setlocal suffixesadd=.zig,.zir
 
 if has('comments')
-    setlocal comments=:///,://!,://,:\\\\
+    setlocal comments=:///,://!,://
     setlocal commentstring=//\ %s
 endif
 
@@ -53,7 +53,7 @@
 unlet! s:tmp_cwd
 
 if exists('g:zig_std_dir')
-    let &l:path = &l:path . ',' . g:zig_std_dir
+    let &l:path = g:zig_std_dir . ',' . &l:path
 endif
 
 let b:undo_ftplugin =
diff --git a/runtime/syntax/zig.vim b/runtime/syntax/zig.vim
index e09b5e8..121b019 100644
--- a/runtime/syntax/zig.vim
+++ b/runtime/syntax/zig.vim
@@ -34,6 +34,7 @@
     \ ,             "usize"
     \ ,             "comptime_int"
     \ ,             "comptime_float"
+    \ ,             "c_char"
     \ ,             "c_short"
     \ ,             "c_ushort"
     \ ,             "c_int"
@@ -96,6 +97,7 @@
     \ ,                  "@atomicStore"
     \ ,                  "@bitCast"
     \ ,                  "@breakpoint"
+    \ ,                  "@trap"
     \ ,                  "@alignCast"
     \ ,                  "@alignOf"
     \ ,                  "@cDefine"
@@ -107,6 +109,7 @@
     \ ,                  "@cmpxchgStrong"
     \ ,                  "@compileError"
     \ ,                  "@compileLog"
+    \ ,                  "@constCast"
     \ ,                  "@ctz"
     \ ,                  "@popCount"
     \ ,                  "@divExact"
@@ -126,9 +129,10 @@
     \ ,                  "@unionInit"
     \ ,                  "@frameAddress"
     \ ,                  "@import"
+    \ ,                  "@inComptime"
     \ ,                  "@newStackCall"
     \ ,                  "@asyncCall"
-    \ ,                  "@intToPtr"
+    \ ,                  "@ptrFromInt"
     \ ,                  "@max"
     \ ,                  "@min"
     \ ,                  "@memcpy"
@@ -145,7 +149,7 @@
     \ ,                  "@panic"
     \ ,                  "@prefetch"
     \ ,                  "@ptrCast"
-    \ ,                  "@ptrToInt"
+    \ ,                  "@intFromPtr"
     \ ,                  "@rem"
     \ ,                  "@returnAddress"
     \ ,                  "@setCold"
@@ -169,25 +173,26 @@
     \ ,                  "@subWithOverflow"
     \ ,                  "@intCast"
     \ ,                  "@floatCast"
-    \ ,                  "@intToFloat"
-    \ ,                  "@floatToInt"
-    \ ,                  "@boolToInt"
-    \ ,                  "@errSetCast"
+    \ ,                  "@floatFromInt"
+    \ ,                  "@intFromFloat"
+    \ ,                  "@intFromBool"
+    \ ,                  "@errorCast"
     \ ,                  "@truncate"
     \ ,                  "@typeInfo"
     \ ,                  "@typeName"
     \ ,                  "@TypeOf"
     \ ,                  "@atomicRmw"
-    \ ,                  "@intToError"
-    \ ,                  "@errorToInt"
-    \ ,                  "@intToEnum"
-    \ ,                  "@enumToInt"
+    \ ,                  "@errorFromInt"
+    \ ,                  "@intFromError"
+    \ ,                  "@enumFromInt"
+    \ ,                  "@intFromEnum"
     \ ,                  "@setAlignStack"
     \ ,                  "@frame"
     \ ,                  "@Frame"
     \ ,                  "@frameSize"
     \ ,                  "@bitReverse"
     \ ,                  "@Vector"
+    \ ,                  "@volatileCast"
     \ ,                  "@sin"
     \ ,                  "@cos"
     \ ,                  "@tan"
@@ -196,7 +201,7 @@
     \ ,                  "@log"
     \ ,                  "@log2"
     \ ,                  "@log10"
-    \ ,                  "@fabs"
+    \ ,                  "@abs"
     \ ,                  "@floor"
     \ ,                  "@ceil"
     \ ,                  "@trunc"