diff --git a/4generics/go.mod b/4generics/go.mod
new file mode 100644
index 0000000..1a4d022
--- /dev/null
+++ b/4generics/go.mod
@@ -0,0 +1,5 @@
+module tmp
+
+go 1.21.0
+
+require golang.org/x/exp v0.0.0-20230817173708-d852ddb80c63
diff --git a/4generics/go.sum b/4generics/go.sum
new file mode 100644
index 0000000..5667e91
--- /dev/null
+++ b/4generics/go.sum
@@ -0,0 +1,2 @@
+golang.org/x/exp v0.0.0-20230817173708-d852ddb80c63 h1:m64FZMko/V45gv0bNmrNYoDEq8U5YUhetc9cBWKS1TQ=
+golang.org/x/exp v0.0.0-20230817173708-d852ddb80c63/go.mod h1:0v4NqG35kSWCMzLaMeX+IQrlSnVE/bqGSyC2cz/9Le8=
diff --git a/go.work.sum b/go.work.sum
new file mode 100644
index 0000000..0a00bcd
--- /dev/null
+++ b/go.work.sum
@@ -0,0 +1,3 @@
+github.com/google/go-cmp v0.5.8/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+golang.org/x/mod v0.12.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/sys v0.11.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=