diff --git a/cmd/holiday-api/go.mod b/cmd/holiday-api/go.mod
new file mode 100644
index 0000000..c2037b9
--- /dev/null
+++ b/cmd/holiday-api/go.mod
@@ -0,0 +1,11 @@
+module github.com/Luzifer/go-holidays/cmd/holiday-api
+
+go 1.15
+
+replace github.com/Luzifer/go-holidays/holidays => ../../holidays
+
+require (
+	github.com/Luzifer/go-holidays/holidays v0.0.0-00010101000000-000000000000
+	github.com/Luzifer/rconfig/v2 v2.2.1
+	github.com/gorilla/mux v1.8.0
+)
diff --git a/cmd/holiday-api/go.sum b/cmd/holiday-api/go.sum
new file mode 100644
index 0000000..a21786c
--- /dev/null
+++ b/cmd/holiday-api/go.sum
@@ -0,0 +1,12 @@
+github.com/Luzifer/rconfig v1.2.0 h1:waD1sqasGVSQSrExpLrQ9Q1JmMaltrS391VdOjWXP/I=
+github.com/Luzifer/rconfig/v2 v2.2.1 h1:zcDdLQlnlzwcBJ8E0WFzOkQE1pCMn3EbX0dFYkeTczg=
+github.com/Luzifer/rconfig/v2 v2.2.1/go.mod h1:OKIX0/JRZrPJ/ZXXWklQEFXA6tBfWaljZbW37w+sqBw=
+github.com/gorilla/mux v1.8.0 h1:i40aqfkR1h2SlN9hojwV5ZA91wcXFOvkdNIeFDP5koI=
+github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
+github.com/spf13/pflag v1.0.3 h1:zPAT6CGy6wXeQ7NtTnaTerfKOsV6V6F8agHXFiazDkg=
+github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
+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/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
diff --git a/cmd/holiday-api/main.go b/cmd/holiday-api/main.go
index e51f7ca..749a2e1 100644
--- a/cmd/holiday-api/main.go
+++ b/cmd/holiday-api/main.go
@@ -13,7 +13,7 @@ import (
 	"time"
 
 	"github.com/Luzifer/go-holidays/holidays"
-	"github.com/Luzifer/rconfig"
+	"github.com/Luzifer/rconfig/v2"
 	"github.com/gorilla/mux"
 )
 
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..5d8ec0f
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,3 @@
+module github.com/Luzifer/go-holidays
+
+go 1.15
diff --git a/holidays/go.mod b/holidays/go.mod
new file mode 100644
index 0000000..d4d0ad3
--- /dev/null
+++ b/holidays/go.mod
@@ -0,0 +1,3 @@
+module github.com/Luzifer/go-holidays/holidays
+
+go 1.15