diff --git a/go.mod b/go.mod
index 7f7ad11..779d196 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ go 1.14
 require (
 	git.torproject.org/pluggable-transports/goptlib.git v1.1.0
 	github.com/alecthomas/kingpin v2.2.6+incompatible
-	github.com/alecthomas/units v0.0.0-20201120081800-1786d5ef83d4 // indirect
+	github.com/alecthomas/units v0.0.0-20210208195552-ff826a37aa15 // indirect
 	github.com/apex/log v1.9.0
 	github.com/cretz/bine v0.1.0
 	github.com/dchest/siphash v1.2.2 // indirect
@@ -21,7 +21,7 @@ require (
 	github.com/mattn/go-colorable v0.1.8
 	github.com/mattn/go-sqlite3 v1.14.6 // indirect
 	github.com/mgutz/ansi v0.0.0-20200706080929-d51e80ef957d // indirect
-	github.com/miekg/dns v1.1.35
+	github.com/miekg/dns v1.1.38
 	github.com/montanaflynn/stats v0.6.4
 	github.com/ooni/psiphon v0.4.0
 	github.com/oschwald/geoip2-golang v1.4.0
diff --git a/go.sum b/go.sum
index 20ae0ac..de31fc0 100644
--- a/go.sum
+++ b/go.sum
@@ -30,8 +30,8 @@ github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuy
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4 h1:Hs82Z41s6SdL1CELW+XaDYmOH4hkBN4/N9og/AsOv7E=
 github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
-github.com/alecthomas/units v0.0.0-20201120081800-1786d5ef83d4 h1:EBTWhcAX7rNQ80RLwLCpHZBBrJuzallFHnF+yMXo928=
-github.com/alecthomas/units v0.0.0-20201120081800-1786d5ef83d4/go.mod h1:OMCwj8VM1Kc9e19TLln2VL61YJF0x1XFtfdL4JdbSyE=
+github.com/alecthomas/units v0.0.0-20210208195552-ff826a37aa15 h1:AUNCr9CiJuwrRYS3XieqF+Z9B9gNxo/eANAJCF2eiN4=
+github.com/alecthomas/units v0.0.0-20210208195552-ff826a37aa15/go.mod h1:OMCwj8VM1Kc9e19TLln2VL61YJF0x1XFtfdL4JdbSyE=
 github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYUyUczH0OGQWaF5ceTx0UBShxjsH6f8oGKYe2c=
 github.com/apache/thrift v0.12.0/go.mod h1:cp2SuWMxlEZw2r+iP2GNCdIi4C1qmUzdZFSVb+bacwQ=
 github.com/apache/thrift v0.13.0/go.mod h1:cp2SuWMxlEZw2r+iP2GNCdIi4C1qmUzdZFSVb+bacwQ=
@@ -305,8 +305,8 @@ github.com/mgutz/ansi v0.0.0-20200706080929-d51e80ef957d h1:5PJl274Y63IEHC+7izoQ
 github.com/mgutz/ansi v0.0.0-20200706080929-d51e80ef957d/go.mod h1:01TrycV0kFyexm33Z7vhZRXopbI8J3TDReVlkTgMUxE=
 github.com/microcosm-cc/bluemonday v1.0.1/go.mod h1:hsXNsILzKxV+sX77C5b8FSuKF00vh2OMYv+xgHpAMF4=
 github.com/miekg/dns v1.0.14/go.mod h1:W1PPwlIAgtquWBMBEV9nkV9Cazfe8ScdGz/Lj7v3Nrg=
-github.com/miekg/dns v1.1.35 h1:oTfOaDH+mZkdcgdIjH6yBajRGtIwcwcaR+rt23ZSrJs=
-github.com/miekg/dns v1.1.35/go.mod h1:KNUDUusw/aVsxyTYZM1oqvCicbwhgbNgztCETuNZ7xM=
+github.com/miekg/dns v1.1.38 h1:MtIY+fmHUVVgv1AXzmKMWcwdCYxTRPG1EDjpqF4RCEw=
+github.com/miekg/dns v1.1.38/go.mod h1:KNUDUusw/aVsxyTYZM1oqvCicbwhgbNgztCETuNZ7xM=
 github.com/mitchellh/cli v1.0.0/go.mod h1:hNIlj7HEI86fIcpObd7a0FcrxTWetlwJDGcceTlRvqc=
 github.com/mitchellh/go-homedir v1.0.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=