diff --git a/runtime/lua/vim/_meta/vimfn.lua b/runtime/lua/vim/_meta/vimfn.lua
index 78f722ccad..70a7503aac 100644
--- a/runtime/lua/vim/_meta/vimfn.lua
+++ b/runtime/lua/vim/_meta/vimfn.lua
@@ -6703,7 +6703,7 @@ function vim.fn.printf(fmt, expr1) end
 --- If the buffer doesn't exist or isn't a prompt buffer, an empty
 --- string is returned.
 ---
---- @param buf any
+--- @param buf integer|string
 --- @return any
 function vim.fn.prompt_getprompt(buf) end
 
@@ -6738,8 +6738,8 @@ function vim.fn.prompt_getprompt(buf) end
 ---    endfunc
 ---    call prompt_setcallback(bufnr(), function('s:TextEntered'))
 ---
---- @param buf any
---- @param expr any
+--- @param buf integer|string
+--- @param expr string|function
 --- @return any
 function vim.fn.prompt_setcallback(buf, expr) end
 
@@ -6751,8 +6751,8 @@ function vim.fn.prompt_setcallback(buf, expr) end
 --- mode.  Without setting a callback Vim will exit Insert mode,
 --- as in any buffer.
 ---
---- @param buf any
---- @param expr any
+--- @param buf integer|string
+--- @param expr string|function
 --- @return any
 function vim.fn.prompt_setinterrupt(buf, expr) end
 
@@ -6763,8 +6763,8 @@ function vim.fn.prompt_setinterrupt(buf, expr) end
 ---   call prompt_setprompt(bufnr(''), 'command: ')
 --- <
 ---
---- @param buf any
---- @param text any
+--- @param buf integer|string
+--- @param text string
 --- @return any
 function vim.fn.prompt_setprompt(buf, text) end
 
diff --git a/src/nvim/eval.lua b/src/nvim/eval.lua
index 9df7976f65..25c1fec1e4 100644
--- a/src/nvim/eval.lua
+++ b/src/nvim/eval.lua
@@ -8044,7 +8044,7 @@ M.funcs = {
 
     ]=],
     name = 'prompt_getprompt',
-    params = { { 'buf', 'any' } },
+    params = { { 'buf', 'integer|string' } },
     signature = 'prompt_getprompt({buf})',
   },
   prompt_setcallback = {
@@ -8084,7 +8084,7 @@ M.funcs = {
 
     ]=],
     name = 'prompt_setcallback',
-    params = { { 'buf', 'any' }, { 'expr', 'any' } },
+    params = { { 'buf', 'integer|string' }, { 'expr', 'string|function' } },
     signature = 'prompt_setcallback({buf}, {expr})',
   },
   prompt_setinterrupt = {
@@ -8101,7 +8101,7 @@ M.funcs = {
 
     ]=],
     name = 'prompt_setinterrupt',
-    params = { { 'buf', 'any' }, { 'expr', 'any' } },
+    params = { { 'buf', 'integer|string' }, { 'expr', 'string|function' } },
     signature = 'prompt_setinterrupt({buf}, {expr})',
   },
   prompt_setprompt = {
@@ -8116,7 +8116,7 @@ M.funcs = {
       <
     ]=],
     name = 'prompt_setprompt',
-    params = { { 'buf', 'any' }, { 'text', 'any' } },
+    params = { { 'buf', 'integer|string' }, { 'text', 'string' } },
     signature = 'prompt_setprompt({buf}, {text})',
   },
   pum_getpos = {