diff --git a/zsh/utils.zsh b/zsh/utils.zsh
index 869265a..eae5e79 100644
--- a/zsh/utils.zsh
+++ b/zsh/utils.zsh
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0
+
 autoload -Uz run-help
 
 (( ${+aliases[run-help]} )) && unalias run-help
diff --git a/zsh/zsh-complete.zsh b/zsh/zsh-complete.zsh
index ad8c5c0..d50f7bb 100644
--- a/zsh/zsh-complete.zsh
+++ b/zsh/zsh-complete.zsh
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0
+
 # On fedora, docker completions can be found in here. Needs to
 # be before compinit.
 #
diff --git a/zsh/zsh-history.zsh b/zsh/zsh-history.zsh
index 533f159..65d2708 100644
--- a/zsh/zsh-history.zsh
+++ b/zsh/zsh-history.zsh
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0
+
 __last_cmd=""
 __local_hist_handle() {
 	__cmd=${1%%$'\n'}
diff --git a/zsh/zshrc b/zsh/zshrc
index 956730b..3ae3528 100644
--- a/zsh/zshrc
+++ b/zsh/zshrc
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0
+
 # auto complete
 source  $HOME/.tools/zsh/zsh-complete.zsh
 source  $HOME/.tools/zsh/zsh-history.zsh