diff --git a/crates/emmylua_code_analysis/resources/std/jit.lua b/crates/emmylua_code_analysis/resources/std/jit.lua
index 75e1f0676..9b320e928 100644
--- a/crates/emmylua_code_analysis/resources/std/jit.lua
+++ b/crates/emmylua_code_analysis/resources/std/jit.lua
@@ -5,24 +5,20 @@
 --- @version JIT
 --- @class jitlib
 --- @field version     string
---- @field version_num number
+--- @field version_num integer
 --- @field os          'Windows' | 'Linux' | 'OSX' | 'BSD' | 'POSIX' | 'Other'
---- @field arch        'x86' | 'x64' | 'arm' | 'arm64' | 'arm64be' | 'ppc' | 'ppc64' | 'ppc64le' | 'mips' | 'mipsel' | 'mips64' | 'mips64el' | string
+--- @field arch        'x86' | 'x64' | 'arm' | 'arm64' | 'arm64be' | 'ppc' | 'ppc64' | 'ppc64le' | 'mips' | 'mipsel' | 'mips32r6' | 'mips32r6el' | 'mips64' | 'mips64el' | 'mips64r6' | 'mips64r6el' | string
 jit = {}
 
---- @overload fun(...): ... param func       function|boolean
---- @param func       function|boolean
+--- @param func?      function | boolean
 --- @param recursive? boolean
 function jit.on(func, recursive) end
 
---- @overload fun(...): ... param func       function|boolean
---- @param func       function|boolean
+--- @param func?      function | boolean
 --- @param recursive? boolean
 function jit.off(func, recursive) end
 
---- @overload fun(...): ... overload fun(tr: number)
---- @overload fun(tr: number)
---- @param func       function | boolean
+--- @param func?      function | boolean | integer
 --- @param recursive? boolean
 function jit.flush(func, recursive) end
 
@@ -33,7 +29,16 @@ function jit.status() end
 
 jit.opt = {}
 
---- @param ... any flags
+--- @param ... string | number
 function jit.opt.start(...) end
 
+--- @param mode? 'prng' | 'strhash' | 'strid' | 'mcode'
+--- @return integer status
+--- @nodiscard
+function jit.security(mode) end
+
+--- @param func   function
+--- @param event? string
+function jit.attach(func, event) end
+
 return jit
diff --git a/crates/emmylua_code_analysis/resources/std/jit/profile.lua b/crates/emmylua_code_analysis/resources/std/jit/profile.lua
index 0631ae84b..93b5de95d 100644
--- a/crates/emmylua_code_analysis/resources/std/jit/profile.lua
+++ b/crates/emmylua_code_analysis/resources/std/jit/profile.lua
@@ -4,15 +4,16 @@
 
 local profile = {}
 
---- @param mode string
---- @param func fun(L: thread, samples: integer, vmst: string)
+--- @param mode? string
+--- @param func  fun(L: thread, samples: integer, vmstate: string)
 function profile.start(mode, func) end
 
 function profile.stop() end
 
---- @overload fun(th: thread, fmt: string, depth: integer)
+--- @overload fun(th: thread, fmt: string, depth: integer): string
 --- @param fmt   string
 --- @param depth integer
+--- @return string dump
 function profile.dumpstack(fmt, depth) end
 
 return profile
diff --git a/crates/emmylua_code_analysis/resources/std/jit/util.lua b/crates/emmylua_code_analysis/resources/std/jit/util.lua
index 1e79a145b..33d1c6342 100644
--- a/crates/emmylua_code_analysis/resources/std/jit/util.lua
+++ b/crates/emmylua_code_analysis/resources/std/jit/util.lua
@@ -2,12 +2,12 @@
 --- @meta jit.util
 --- @version JIT
 
---- @class Trace
---- @class Proto
+--- @class JIT.Proto
 
 local util = {}
 
 --- @class jit.funcinfo.lua
+--- @field proto JIT.Proto
 local funcinfo = {
     linedefined = 0,
     lastlinedefined = 0,
@@ -22,8 +22,6 @@ local funcinfo = {
     children = false,
     source = "",
     loc = "",
-    ---@type Proto[]
-    proto = {},
 }
 
 --- @class jit.funcinfo.c
@@ -33,23 +31,23 @@ local funcinfo2 = {
     upvalues = 0,
 }
 
---- @param func function
+--- @param func function | JIT.Proto
 --- @param pc?  integer
---- @return jit.funcinfo.c|jit.funcinfo.lua info
+--- @return jit.funcinfo.c | jit.funcinfo.lua info
 function util.funcinfo(func, pc) end
 
---- @param func function
+--- @param func function | JIT.Proto
 --- @param pc   integer
 --- @return integer? ins
 --- @return integer? m
 function util.funcbc(func, pc) end
 
---- @param func function
+--- @param func function | JIT.Proto
 --- @param idx  integer
 --- @return any? k
 function util.funck(func, idx) end
 
---- @param func function
+--- @param func function | JIT.Proto
 --- @param idx  integer
 --- @return string? name
 function util.funcuvname(func, idx) end
@@ -63,11 +61,11 @@ local traceinfo = {
     linktype = "",
 }
 
---- @param tr Trace
+--- @param tr integer
 --- @return jit.traceinfo? info
 function util.traceinfo(tr) end
 
---- @param tr  Trace
+--- @param tr  integer
 --- @param ref integer
 --- @return integer? m
 --- @return integer? ot
@@ -76,7 +74,7 @@ function util.traceinfo(tr) end
 --- @return integer? prev
 function util.traceir(tr, ref) end
 
---- @param tr  Trace
+--- @param tr  integer
 --- @param idx integer
 --- @return any? k
 --- @return integer? t
@@ -85,19 +83,21 @@ function util.tracek(tr, idx) end
 
 --- @class jit.snap: integer[]
 
---- @param tr Trace
---- @param sn integer
+--- @param tr      integer
+--- @param sn      integer
+--- @param getpos? boolean
 --- @return jit.snap? snap
-function util.tracesnap(tr, sn) end
+--- @return integer? pos
+function util.tracesnap(tr, sn, getpos) end
 
---- @param tr Trace
+--- @param tr integer
 --- @return string? mcode
 --- @return integer? addr
 --- @return integer? loop
 function util.tracemc(tr) end
 
 --- @overload fun(exitno: integer): integer
---- @param tr     Trace
+--- @param tr     integer
 --- @param exitno integer
 --- @return integer? addr
 function util.traceexitstub(tr, exitno) end