diff --git a/Changes.md b/Changes.md
index de6da4a..403d325 100644
--- a/Changes.md
+++ b/Changes.md
@@ -20,7 +20,7 @@ Fixed:
 - Deprecate the use of `io.popen` in following widgets:
     * wifi_linux, wifiiw_linux, hwmontemp_linux, hddtemp_linux
     * bat_freebsd, mem_freebsd, net_freebsd, thermal_freebsd, uptime_freebsd,
-      cpu_freebsd
+      cpu_freebsd, cpufreq_freebsd, fanspeed_freebsd
     * volume, gmail, mdir, mpd, fs
 - [mpd] Lua 5.3 compatibility (for real this time); also correct a typo
 - [pkg,weather,contrib/btc] Allow function call without Awesome
diff --git a/widgets/cpufreq_freebsd.lua b/widgets/cpufreq_freebsd.lua
index 351cc68..c53e2d7 100644
--- a/widgets/cpufreq_freebsd.lua
+++ b/widgets/cpufreq_freebsd.lua
@@ -1,6 +1,5 @@
 -- {{{ Grab environment
 local tonumber = tonumber
-local setmetatable = setmetatable
 local helpers = require("vicious.helpers")
 -- }}}
 
@@ -11,24 +10,24 @@ local cpufreq_freebsd = {}
 
 
 -- {{{ CPU frequency widget type
-local function worker(format, warg)
-    if not warg then return end
+function cpufreq_freebsd.async(format, warg, callback)
+    if not warg then return callback({}) end
 
     -- Default frequency and voltage values
     local freqv = {
         ["mhz"] = "N/A", ["ghz"] = "N/A",
         ["v"]   = "N/A", ["mv"]  = "N/A",
+        ["governor"] = "N/A",
     }
 
-    local freq = tonumber(helpers.sysctl("dev.cpu." .. warg .. ".freq"))
+    helpers.sysctl_async({ "dev.cpu." .. warg .. ".freq" }, function(ret)
+        freqv.mhz = tonumber(ret["dev.cpu." .. warg .. ".freq"])
+        freqv.ghz = freqv.mhz / 1000
 
-    freqv.mhz = freq
-    freqv.ghz = freq / 1000
+        return callback({freqv.mhz, freqv.ghz, freqv.mv, freqv.v, freqv.governor})
+    end)
 
-    local governor = "N/A"
-
-    return {freqv.mhz, freqv.ghz, freqv.mv, freqv.v, governor}
 end
 -- }}}
 
-return setmetatable(cpufreq_freebsd, { __call = function(_, ...) return worker(...) end })
+return helpers.setasyncall(cpufreq_freebsd)
diff --git a/widgets/fanspeed_freebsd.lua b/widgets/fanspeed_freebsd.lua
index 774b0da..b8d1a60 100644
--- a/widgets/fanspeed_freebsd.lua
+++ b/widgets/fanspeed_freebsd.lua
@@ -1,5 +1,4 @@
 -- {{{ Grab environment
-local setmetatable = setmetatable
 local helpers = require("vicious.helpers")
 local tonumber = tonumber
 -- }}}
@@ -10,19 +9,32 @@ local tonumber = tonumber
 -- expects one (1) full sysctl string to entry
 --   e.g.: "dev.acpi_ibm.0.fan_speed"
 
+-- fanspeed: provides speed level of main fan
+-- vicious.widgets.fanspeed
+--
+-- expects one (1) full sysctl string to entry
+--   e.g.: "dev.acpi_ibm.0.fan_speed"
 local fanspeed_freebsd = {}
 
-local function worker(format, warg)
-    if not warg then return end
+-- {{{ fanspeed widget type
+function fanspeed_freebsd.async(format, warg, callback)
+    if not warg then return callback({}) end
+    if type(warg) ~= "table" then warg = { warg } end
 
-    local fanspeed = helpers.sysctl(warg)
+    helpers.sysctl_async(warg, function(ret)
+        local fanspeed = {}
 
-    if not fanspeed then
-        -- use negative fanspeed to indicate error
-        return {-1}
-    else
-        return {tonumber(fanspeed)}
-    end
+        for i=1,#warg do
+            if ret[warg[i]] ~= nil then
+                fanspeed[i] = tonumber(ret[warg[i]])
+            else
+                fanspeed[i] = "N/A"
+            end
+        end
+
+        callback(fanspeed)
+    end)
 end
+-- }}}
 
-return setmetatable(fanspeed_freebsd, { __call = function(_, ...) return worker(...) end })
+return helpers.setasyncall(fanspeed_freebsd)