Updating go.mod files to support pre-release version
diff --git a/tools/identify_license/backend/v2/go.mod b/tools/identify_license/backend/v2/go.mod
index 9b73b94..76daca4 100644
--- a/tools/identify_license/backend/v2/go.mod
+++ b/tools/identify_license/backend/v2/go.mod
@@ -1,10 +1,8 @@
 module github.com/google/licenseclassifier/tools/identify_license/backend/v2
 
-go 1.18
+go 1.16
 
 require (
-	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/google/licenseclassifier/tools/identify_license/results/v2 v2.0.0 // indirect
-	github.com/google/licenseclassifier/v2 v2.0.0 // indirect
-	github.com/sergi/go-diff v1.1.0 // indirect
+	github.com/google/licenseclassifier/tools/identify_license/results/v2 v2.0.0-20220321191234-a6f4b9f7a6aa
+	github.com/google/licenseclassifier/v2 v2.0.0-pre.1
 )
diff --git a/tools/identify_license/backend/v2/go.sum b/tools/identify_license/backend/v2/go.sum
index 72fe660..38af4d1 100644
--- a/tools/identify_license/backend/v2/go.sum
+++ b/tools/identify_license/backend/v2/go.sum
@@ -1,17 +1,26 @@
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/google/go-cmp v0.5.2 h1:X2ev0eStA3AbceY54o37/0PQ/UWqKEiiO2dKL5OPaFM=
 github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/licenseclassifier/tools/identify_license/results/v2 v2.0.0-20220321191234-a6f4b9f7a6aa h1:vT68wqKvPbCGA0KQRHw9pPP9iNQyRQ0PfpEGImvd1Zo=
+github.com/google/licenseclassifier/tools/identify_license/results/v2 v2.0.0-20220321191234-a6f4b9f7a6aa/go.mod h1:EFQrPGzBO34l07YBD+4sPhZJ5Xy99rWqt3YaATChG3o=
+github.com/google/licenseclassifier/v2 v2.0.0-pre.1 h1:xHaTd/sxbEFzX3l03NacJwIX0RKIpQmvKL8lztmgWNc=
+github.com/google/licenseclassifier/v2 v2.0.0-pre.1/go.mod h1:cOjbdH0kyC9R22sdQbYsFkto4NGCAc+ZSwbeThazEtM=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/sergi/go-diff v1.1.0 h1:we8PVUC3FE2uYfodKH/nBHMSetSfHDR6scGdBi+erh0=
 github.com/sergi/go-diff v1.1.0/go.mod h1:STckp+ISIX8hZLjrqAeVduY0gWCT9IjLuqbuNXdaHfM=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.4 h1:/eiJrUcujPVeJ3xlSWaiNi3uSVmDGBK1pDHUHAnao1I=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
diff --git a/tools/identify_license/results/v2/go.mod b/tools/identify_license/results/v2/go.mod
index 962b8e0..165cabd 100644
--- a/tools/identify_license/results/v2/go.mod
+++ b/tools/identify_license/results/v2/go.mod
@@ -1,3 +1,3 @@
 module github.com/google/licenseclassifier/tools/identify_license/results/v2
 
-go 1.18
+go 1.16