diff --git a/Section2/application_structure/go.work b/Section2/application_structure/go.work
new file mode 100644
index 0000000..740af35
--- /dev/null
+++ b/Section2/application_structure/go.work
@@ -0,0 +1 @@
+go 1.21.1
diff --git a/Section3/go.work b/Section3/go.work
new file mode 100644
index 0000000..740af35
--- /dev/null
+++ b/Section3/go.work
@@ -0,0 +1 @@
+go 1.21.1
diff --git a/Section4/go.work b/Section4/go.work
new file mode 100644
index 0000000..740af35
--- /dev/null
+++ b/Section4/go.work
@@ -0,0 +1 @@
+go 1.21.1