diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..4ebad25
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,19 @@
+### Go ###
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+### Go Patch ###
+# Don't ship packages
+# - at least during initial development or until somebody presents a reason to
+/vendor/
+/Godeps/
diff --git a/go.mod b/go.mod
index d0068ee..4af8fd4 100644
--- a/go.mod
+++ b/go.mod
@@ -7,6 +7,5 @@ require (
 	github.com/coredns/coredns v1.6.9
 	github.com/miekg/dns v1.1.29
 	github.com/prometheus/client_golang v1.6.0
-	gopkg.in/asn1-ber.v1 v1.0.0-20181015200546-f715ec2f112d // indirect
-	gopkg.in/ldap.v2 v2.5.1
+	gopkg.in/ldap.v3 v3.1.0
 )
diff --git a/go.sum b/go.sum
index c948de3..d79d377 100644
--- a/go.sum
+++ b/go.sum
@@ -533,8 +533,8 @@ gopkg.in/h2non/gock.v1 v1.0.15/go.mod h1:sX4zAkdYX1TRGJ2JY156cFspQn4yRWn6p9EMdOD
 gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
 gopkg.in/ini.v1 v1.42.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/ini.v1 v1.44.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
-gopkg.in/ldap.v2 v2.5.1 h1:wiu0okdNfjlBzg6UWvd1Hn8Y+Ux17/u/4nlk4CQr6tU=
-gopkg.in/ldap.v2 v2.5.1/go.mod h1:oI0cpe/D7HRtBQl8aTg+ZmzFUAvu4lsv3eLXMLGFxWk=
+gopkg.in/ldap.v3 v3.1.0 h1:DIDWEjI7vQWREh0S8X5/NFPCZ3MCVd55LmXKPW4XLGE=
+gopkg.in/ldap.v3 v3.1.0/go.mod h1:dQjCc0R0kfyFjIlWNMH1DORwUASZyDxo2Ry1B51dXaQ=
 gopkg.in/mcuadros/go-syslog.v2 v2.2.1/go.mod h1:l5LPIyOOyIdQquNg+oU6Z3524YwrcqEm0aKH+5zpt2U=
 gopkg.in/natefinch/lumberjack.v2 v2.0.0/go.mod h1:l0ndWWf7gzL7RNwBG7wST/UCcT4T24xpD6X8LsfU/+k=
 gopkg.in/ns1/ns1-go.v2 v2.0.0-20190730140822-b51389932cbc/go.mod h1:VV+3haRsgDiVLxyifmMBrBIuCWFBPYKbRssXB9z67Hw=