diff --git a/.travis/check-generate.sh b/.travis/check-generate.sh
index 82c62d39..853d28e4 100755
--- a/.travis/check-generate.sh
+++ b/.travis/check-generate.sh
@@ -4,6 +4,8 @@ set -ex
 go generate gonum.org/v1/netlib/blas/netlib
 go generate gonum.org/v1/netlib/lapack/lapacke
 go generate gonum.org/v1/netlib/lapack/netlib
+
+git checkout -- go.{mod,sum}
 if [ -n "$(git diff)" ]; then
 	exit 1
 fi
diff --git a/.travis/linux/install.sh b/.travis/linux/install.sh
index 66bf73cf..b6c1519c 100644
--- a/.travis/linux/install.sh
+++ b/.travis/linux/install.sh
@@ -9,7 +9,7 @@ go get gonum.org/v1/gonum/lapack
 go get gonum.org/v1/gonum/floats
 
 # Repositories for code generation.
-go get github.com/cznic/cc
+go get modernc.org/cc
 go get gonum.org/v1/netlib/internal/binding
 
 # travis compiles commands in script and then executes in bash.  By adding
diff --git a/.travis/osx/install.sh b/.travis/osx/install.sh
index e0363af2..c37ddcce 100644
--- a/.travis/osx/install.sh
+++ b/.travis/osx/install.sh
@@ -9,7 +9,7 @@ go get gonum.org/v1/gonum/lapack
 go get gonum.org/v1/gonum/floats
 
 # Repositories for code generation.
-go get github.com/cznic/cc
+go get modernc.org/cc
 go get gonum.org/v1/netlib/internal/binding
 
 # travis compiles commands in script and then executes in bash.  By adding
diff --git a/blas/netlib/generate_blas.go b/blas/netlib/generate_blas.go
index 9193e664..4d6a536c 100644
--- a/blas/netlib/generate_blas.go
+++ b/blas/netlib/generate_blas.go
@@ -18,7 +18,7 @@ import (
 	"strings"
 	"text/template"
 
-	"github.com/cznic/cc"
+	"modernc.org/cc"
 
 	"gonum.org/v1/netlib/internal/binding"
 )
diff --git a/go.mod b/go.mod
new file mode 100644
index 00000000..4224f280
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,12 @@
+module gonum.org/v1/netlib
+
+require (
+	github.com/remyoudompheng/bigfft v0.0.0-20170806203942-52369c62f446 // indirect
+	golang.org/x/exp v0.0.0-20190312203227-4b39c73a6495
+	gonum.org/v1/gonum v0.0.0-20190312223110-e28f136e01a8
+	modernc.org/cc v1.0.0
+	modernc.org/golex v1.0.0 // indirect
+	modernc.org/mathutil v1.0.0 // indirect
+	modernc.org/strutil v1.0.0 // indirect
+	modernc.org/xc v1.0.0
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 00000000..59b9c1b8
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,27 @@
+github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
+github.com/remyoudompheng/bigfft v0.0.0-20170806203942-52369c62f446 h1:/NRJ5vAYoqz+7sG51ubIDHXeWO8DlTSrToPu6q11ziA=
+github.com/remyoudompheng/bigfft v0.0.0-20170806203942-52369c62f446/go.mod h1:uYEyJGbgTkfkS4+E/PavXkNJcbFIpEtjt2B0KDQ5+9M=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/exp v0.0.0-20190125153040-c74c464bbbf2/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
+golang.org/x/exp v0.0.0-20190312203227-4b39c73a6495 h1:I6A9Ag9FpEKOjcKrRNjQkPHawoXIhKyTGfvvjFAiiAk=
+golang.org/x/exp v0.0.0-20190312203227-4b39c73a6495/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
+golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
+golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE=
+golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/tools v0.0.0-20190206041539-40960b6deb8e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20190312151545-0bb0c0a6e846/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
+gonum.org/v1/gonum v0.0.0-20190312223110-e28f136e01a8 h1:ydI/ZIWZ7BIeR4qs4epCV2Pw1owzB9je1qxtb9Od8Bc=
+gonum.org/v1/gonum v0.0.0-20190312223110-e28f136e01a8/go.mod h1:jevfED4GnIEnJrWW55YmY9DMhajHcnkqVnEXmEtMyNI=
+modernc.org/cc v1.0.0 h1:nPibNuDEx6tvYrUAtvDTTw98rx5juGsa5zuDnKwEEQQ=
+modernc.org/cc v1.0.0/go.mod h1:1Sk4//wdnYJiUIxnW8ddKpaOJCF37yAdqYnkxUpaYxw=
+modernc.org/golex v1.0.0 h1:wWpDlbK8ejRfSyi0frMyhilD3JBvtcx2AdGDnU+JtsE=
+modernc.org/golex v1.0.0/go.mod h1:b/QX9oBD/LhixY6NDh+IdGv17hgB+51fET1i2kPSmvk=
+modernc.org/mathutil v1.0.0 h1:93vKjrJopTPrtTNpZ8XIovER7iCIH1QU7wNbOQXC60I=
+modernc.org/mathutil v1.0.0/go.mod h1:wU0vUrJsVWBZ4P6e7xtFJEhFSNsfRLJ8H458uRjg03k=
+modernc.org/strutil v1.0.0 h1:XVFtQwFVwc02Wk+0L/Z/zDDXO81r5Lhe6iMKmGX3KhE=
+modernc.org/strutil v1.0.0/go.mod h1:lstksw84oURvj9y3tn8lGvRxyRC1S2+g5uuIzNfIOBs=
+modernc.org/xc v1.0.0 h1:7ccXrupWZIS3twbUGrtKmHS2DXY6xegFua+6O3xgAFU=
+modernc.org/xc v1.0.0/go.mod h1:mRNCo0bvLjGhHO9WsyuKVU4q0ceiDDDoEeWDJHrNx8I=
diff --git a/internal/binding/binding.go b/internal/binding/binding.go
index b4c4ad68..746df9ba 100644
--- a/internal/binding/binding.go
+++ b/internal/binding/binding.go
@@ -15,8 +15,8 @@ import (
 	"text/template"
 	"unsafe"
 
-	"github.com/cznic/cc"
-	"github.com/cznic/xc"
+	"modernc.org/cc"
+	"modernc.org/xc"
 )
 
 func model() *cc.Model {
diff --git a/lapack/lapacke/generate_lapacke.go b/lapack/lapacke/generate_lapacke.go
index 10ab6d42..c03b2adb 100644
--- a/lapack/lapacke/generate_lapacke.go
+++ b/lapack/lapacke/generate_lapacke.go
@@ -18,7 +18,7 @@ import (
 	"strings"
 	"text/template"
 
-	"github.com/cznic/cc"
+	"modernc.org/cc"
 
 	"gonum.org/v1/netlib/internal/binding"
 )