diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..d57cf38
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,7 @@
+module github.com/dhowden/tag
+
+go 1.18
+
+require github.com/dhowden/itl v0.0.0-20170329215456-9fbe21093131
+
+require github.com/dhowden/plist v0.0.0-20141002110153-5db6e0d9931a // indirect
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..643743f
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,4 @@
+github.com/dhowden/itl v0.0.0-20170329215456-9fbe21093131 h1:siEGb+iB1Ea75U7BnkYVSqSRzE6QHlXCbqEXenxRmhQ=
+github.com/dhowden/itl v0.0.0-20170329215456-9fbe21093131/go.mod h1:eVWQJVQ67aMvYhpkDwaH2Goy2vo6v8JCMfGXfQ9sPtw=
+github.com/dhowden/plist v0.0.0-20141002110153-5db6e0d9931a h1:7MucP9rMAsQRcRE1sGpvMZoTxFYZlDmfDvCH+z7H+90=
+github.com/dhowden/plist v0.0.0-20141002110153-5db6e0d9931a/go.mod h1:sLjdR6uwx3L6/Py8F+QgAfeiuY87xuYGwCDqRFrvCzw=