diff --git a/filter/op_datetime.go b/filter/op_datetime.go
index 0e9aa00..892ea78 100644
--- a/filter/op_datetime.go
+++ b/filter/op_datetime.go
@@ -2,7 +2,7 @@ package filter
 
 import (
 	"fmt"
-	datetime "github.com/di-wu/xsd-datetime"
+	datetime "github.com/q-uint/xsd-datetime"
 	"github.com/scim2/filter-parser/v2"
 	"strings"
 	"time"
diff --git a/filter/operators.go b/filter/operators.go
index 21b463f..0f8c479 100644
--- a/filter/operators.go
+++ b/filter/operators.go
@@ -2,7 +2,7 @@ package filter
 
 import (
 	"fmt"
-	datetime "github.com/di-wu/xsd-datetime"
+	datetime "github.com/q-uint/xsd-datetime"
 	"github.com/elimity-com/scim/schema"
 	"github.com/scim2/filter-parser/v2"
 )
diff --git a/go.mod b/go.mod
index 1a1fcb3..d4bf6eb 100644
--- a/go.mod
+++ b/go.mod
@@ -3,6 +3,6 @@ module github.com/elimity-com/scim
 go 1.16
 
 require (
-	github.com/di-wu/xsd-datetime v1.0.0
-	github.com/scim2/filter-parser/v2 v2.2.0
+	github.com/q-uint/xsd-datetime v1.0.0
+	github.com/scim2/filter-parser/v2 v2.3.1
 )
diff --git a/go.sum b/go.sum
index 458c7fa..622ef47 100644
--- a/go.sum
+++ b/go.sum
@@ -1,6 +1,6 @@
-github.com/di-wu/parser v0.2.2 h1:I9oHJ8spBXOeL7Wps0ffkFFFiXJf/pk7NX9lcAMqRMU=
-github.com/di-wu/parser v0.2.2/go.mod h1:SLp58pW6WamdmznrVRrw2NTyn4wAvT9rrEFynKX7nYo=
-github.com/di-wu/xsd-datetime v1.0.0 h1:vZoGNkbzpBNoc+JyfVLEbutNDNydYV8XwHeV7eUJoxI=
-github.com/di-wu/xsd-datetime v1.0.0/go.mod h1:i3iEhrP3WchwseOBeIdW/zxeoleXTOzx1WyDXgdmOww=
-github.com/scim2/filter-parser/v2 v2.2.0 h1:QGadEcsmypxg8gYChRSM2j1edLyE/2j72j+hdmI4BJM=
-github.com/scim2/filter-parser/v2 v2.2.0/go.mod h1:jWnkDToqX/Y0ugz0P5VvpVEUKcWcyHHj+X+je9ce5JA=
+github.com/q-uint/parser v0.3.1 h1:VCHob90UXy0L5oMgny5EjbDC2YeEGNc6qahWa8+tUhQ=
+github.com/q-uint/parser v0.3.1/go.mod h1:+Ds4ucT1DM1SwDpzgz7glN+rnrzxMAXgiYpt4aRUUY8=
+github.com/q-uint/xsd-datetime v1.0.0 h1:D2LCjbiDGeh121e1EH0XdOMPjDs/mmSq9yurbIYNWYY=
+github.com/q-uint/xsd-datetime v1.0.0/go.mod h1:ZiZOJFx47KCuqNEe7bFIZlmDAFw4qLNcpJm8Dr8sQ+s=
+github.com/scim2/filter-parser/v2 v2.3.1 h1:o24v+z9drjtWoF6XLtXOFWpkmo1GGfBKZqrAjy6npQM=
+github.com/scim2/filter-parser/v2 v2.3.1/go.mod h1:R5u/HUG8vO+TVvtmBzUX2LSuEej27v+ckcJqjIa4d8E=
diff --git a/schema/core.go b/schema/core.go
index 61d5291..e3c9f94 100644
--- a/schema/core.go
+++ b/schema/core.go
@@ -7,7 +7,7 @@ import (
 	"strconv"
 	"strings"
 
-	datetime "github.com/di-wu/xsd-datetime"
+	datetime "github.com/q-uint/xsd-datetime"
 	"github.com/elimity-com/scim/errors"
 	"github.com/elimity-com/scim/optional"
 )