diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 7759845..2d53459 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -18,7 +18,7 @@ jobs:
     - name: Setup Go
       uses: actions/setup-go@v3
       with:
-        go-version: 1.22
+        go-version: 1.23
     - name: Fetch dependencies
       run: |
         cd gopath/github.com/katydid/validator-go
@@ -28,7 +28,7 @@ jobs:
         cd gopath/github.com/katydid/validator-go
         go install -x github.com/goccmack/gocc
         go install -x github.com/awalterschulze/goderive
-        go install -x github.com/katydid/checklicense
+        go install -x github.com/awalterschulze/checklicense
     - name: env
       run: env && go env && pwd
     - name: tree
diff --git a/Makefile b/Makefile
index 3aa7a67..3d2a69b 100644
--- a/Makefile
+++ b/Makefile
@@ -21,7 +21,7 @@ dep:
 	go install -v github.com/awalterschulze/goderive
 
 checklicense:
-	go get github.com/katydid/checklicense
+	go get github.com/awalterschulze/checklicense
 	checklicense . \
 	bnf \
 	doc.go \
@@ -29,8 +29,6 @@ checklicense:
 	.svg \
 	.txt \
 	COPIED_FROM_GO \
-	go.mod \
-	go.sum \
 	parser/yaml/issues.md
 
 test:
diff --git a/go.mod b/go.mod
index 6a6a848..dc3286f 100644
--- a/go.mod
+++ b/go.mod
@@ -1,11 +1,11 @@
 module github.com/katydid/validator-go
 
-go 1.22
+go 1.23
 
 require (
+	github.com/awalterschulze/checklicense v0.0.0-20250113114552-47a43f05af3c
 	github.com/awalterschulze/goderive v0.0.0-20240621165703-0a721d5b1d72
 	github.com/goccmack/gocc v0.0.0-20230228185258-2292f9e40198
-	github.com/katydid/checklicense v0.0.0-20160404130115-fde9b404b192
 )
 
 require (
diff --git a/go.sum b/go.sum
index 8a2ee51..9a7f7f1 100644
--- a/go.sum
+++ b/go.sum
@@ -1,9 +1,9 @@
+github.com/awalterschulze/checklicense v0.0.0-20250113114552-47a43f05af3c h1:1aGEYkY8qNl8FNnLuRCXg811W0OKNThz639QLl3UJsI=
+github.com/awalterschulze/checklicense v0.0.0-20250113114552-47a43f05af3c/go.mod h1:oUHvoD4crryzAwDwtdQqCnaZRznAvZE64edH9ukb1K4=
 github.com/awalterschulze/goderive v0.0.0-20240621165703-0a721d5b1d72 h1:G6rewDn2xtJutMBmnsKImjcUOWXTWLPHxxmWfEjmg0E=
 github.com/awalterschulze/goderive v0.0.0-20240621165703-0a721d5b1d72/go.mod h1:rXccmDQDJN/4aGqWxWhq+UmBJeQEkFV/2/rkluP+ipA=
 github.com/goccmack/gocc v0.0.0-20230228185258-2292f9e40198 h1:FSii2UQeSLngl3jFoR4tUKZLprO7qUlh/TKKticc0BM=
 github.com/goccmack/gocc v0.0.0-20230228185258-2292f9e40198/go.mod h1:DTh/Y2+NbnOVVoypCCQrovMPDKUGp4yZpSbWg5D0XIM=
-github.com/katydid/checklicense v0.0.0-20160404130115-fde9b404b192 h1:to6Z5a2KsdLrbtSF6A0x+XsVglZBy3/7JrjCcwuKQdY=
-github.com/katydid/checklicense v0.0.0-20160404130115-fde9b404b192/go.mod h1:4jBNOR9RCOsFJ5goipiJ4bxzXA0xghxRD79Dy08cXpQ=
 github.com/kisielk/gotool v1.0.0 h1:AV2c/EiW3KqPNT9ZKl07ehoAGi4C5/01Cfbblndcapg=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
 golang.org/x/mod v0.8.0 h1:LUYupSeNrTNCGzR/hVBk2NHZO4hXcVaW1k4Qx7rjPx8=
diff --git a/tools/tools.go b/tools/tools.go
index 0350edf..9099bb5 100644
--- a/tools/tools.go
+++ b/tools/tools.go
@@ -5,7 +5,7 @@
 package tools
 
 import (
+	_ "github.com/awalterschulze/checklicense"
 	_ "github.com/awalterschulze/goderive"
 	_ "github.com/goccmack/gocc"
-	_ "github.com/katydid/checklicense"
 )