diff --git a/.travis.yml b/.travis.yml
index 1329baf..4293773 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,8 @@
 language: go
 
 go:
-  - 1.10.x
-  - 1.11.x
+  - 1.15.x
+  - 1.16.x
   - tip
 
 script: go test -v -race -cover ./...
diff --git a/go.mod b/go.mod
index 14b83fa..cb55e9a 100644
--- a/go.mod
+++ b/go.mod
@@ -1,7 +1,9 @@
 module github.com/Luzifer/rconfig/v2
 
+go 1.16
+
 require (
-	github.com/spf13/pflag v1.0.3
-	gopkg.in/validator.v2 v2.0.0-20180514200540-135c24b11c19
-	gopkg.in/yaml.v2 v2.2.2
+	github.com/spf13/pflag v1.0.5
+	gopkg.in/validator.v2 v2.0.0-20210331031555-b37d688a7fb0
+	gopkg.in/yaml.v2 v2.4.0
 )
diff --git a/go.sum b/go.sum
index e76e66f..5d149dc 100644
--- a/go.sum
+++ b/go.sum
@@ -1,7 +1,13 @@
 github.com/spf13/pflag v1.0.3 h1:zPAT6CGy6wXeQ7NtTnaTerfKOsV6V6F8agHXFiazDkg=
 github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
+github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
+github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/validator.v2 v2.0.0-20180514200540-135c24b11c19 h1:WB265cn5OpO+hK3pikC9hpP1zI/KTwmyMFKloW9eOVc=
 gopkg.in/validator.v2 v2.0.0-20180514200540-135c24b11c19/go.mod h1:o4V0GXN9/CAmCsvJ0oXYZvrZOe7syiDZSN1GWGZTGzc=
+gopkg.in/validator.v2 v2.0.0-20210331031555-b37d688a7fb0 h1:EFLtLCwd8tGN+r/ePz3cvRtdsfYNhDEdt/vp6qsT+0A=
+gopkg.in/validator.v2 v2.0.0-20210331031555-b37d688a7fb0/go.mod h1:o4V0GXN9/CAmCsvJ0oXYZvrZOe7syiDZSN1GWGZTGzc=
 gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
+gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=