diff --git a/internal/collections/doc.go b/internal/collections/doc.go
index edd48f8c23..1d10adec93 100644
--- a/internal/collections/doc.go
+++ b/internal/collections/doc.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 // Package collections contains some helper types representing collections
 // of values that could not normally be represented using Go's built-in
 // collection types, typically because of the need to use key types that
diff --git a/internal/collections/map.go b/internal/collections/map.go
index 3a516a74c2..e81f0beb0b 100644
--- a/internal/collections/map.go
+++ b/internal/collections/map.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package collections
 
 // Set represents an associative array from keys of type K to values of type V.
diff --git a/internal/collections/map_test.go b/internal/collections/map_test.go
index 44d137ef46..164a53cdea 100644
--- a/internal/collections/map_test.go
+++ b/internal/collections/map_test.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package collections
 
 import "testing"
diff --git a/internal/collections/set.go b/internal/collections/set.go
index 991dac8e8c..39da007a55 100644
--- a/internal/collections/set.go
+++ b/internal/collections/set.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package collections
 
 // Set represents an unordered set of values of a particular type.
diff --git a/internal/collections/set_test.go b/internal/collections/set_test.go
index 9e38fba256..ed9a1939cc 100644
--- a/internal/collections/set_test.go
+++ b/internal/collections/set_test.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package collections
 
 import (
diff --git a/internal/collections/unique_key.go b/internal/collections/unique_key.go
index 5e8940efb2..d6caf0f3b9 100644
--- a/internal/collections/unique_key.go
+++ b/internal/collections/unique_key.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package collections
 
 // UniqueKey represents a value that is comparable and uniquely identifies
diff --git a/internal/collections/unique_key_test.go b/internal/collections/unique_key_test.go
index 2ca75ca8a8..9cfabe0527 100644
--- a/internal/collections/unique_key_test.go
+++ b/internal/collections/unique_key_test.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: BUSL-1.1
+
 package collections
 
 type testingKey string