1 files changed, 4 insertions, 4 deletions

diff --git a/src/luarocks/signing.lua b/src/luarocks/signing.tl
index cb91643a..20591363 100644
--- a/src/luarocks/signing.lua
+++ b/src/luarocks/signing.tl
@@ -3,7 +3,7 @@ local signing = {}
 local cfg = require("luarocks.core.cfg")
 local fs = require("luarocks.fs")
 
-local function get_gpg()
+local function get_gpg(): string, string
    local vars = cfg.variables
    local gpg = vars.GPG
    local gpg_ok, err = fs.is_tool_available(gpg, "gpg")
@@ -13,11 +13,11 @@ local function get_gpg()
    return gpg
 end
 
-function signing.signature_url(url)
+function signing.signature_url(url: string): string
    return url .. ".asc"
 end
 
-function signing.sign_file(file)
+function signing.sign_file(file: string): string, string
    local gpg, err = get_gpg()
    if not gpg then
       return nil, err
@@ -31,7 +31,7 @@ function signing.sign_file(file)
    end
 end
 
-function signing.verify_signature(file, sigfile)
+function signing.verify_signature(file: string, sigfile: string): boolean, string 
    local gpg, err = get_gpg()
    if not gpg then
       return nil, err