diff --git a/.zshrc b/.zshrc
index e5db352..86f28e7 100644
--- a/.zshrc
+++ b/.zshrc
@@ -248,7 +248,7 @@ lg()
 # nnn - n³
 #
 
-local nnn_plug=(
+readonly nnn_plug=(
   'b:-!bat --paging=always "$nnn"*'
   'd:fzcd'      # fzf-select a file & cd to its folder
   'z:fzopen'    # fzf-select a file & open it
diff --git a/bin/.tool-versions b/bin/.tool-versions
index 4a2e56f..c0e5d07 100644
--- a/bin/.tool-versions
+++ b/bin/.tool-versions
@@ -1,2 +1,2 @@
-python 3.12.4
-direnv 2.34.0
+python 3.12.7
+direnv 2.35.0