diff --git a/notebooks/InteractiveAfrica.jl b/notebooks/InteractiveAfrica.jl
index 769f3861..fa8f8d71 100644
--- a/notebooks/InteractiveAfrica.jl
+++ b/notebooks/InteractiveAfrica.jl
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LGPL-3.0-or-later
+
 ### A Pluto.jl notebook ###
 # v0.19.41
 
diff --git a/notebooks/Introduction.jl b/notebooks/Introduction.jl
index df4c0cdf..0d0d84dd 100644
--- a/notebooks/Introduction.jl
+++ b/notebooks/Introduction.jl
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LGPL-3.0-or-later
+
 ### A Pluto.jl notebook ###
 # v0.19.41