diff --git a/.github/dependencies.yml b/.github/dependencies.yml
index f644322ff..12beaecbb 100644
--- a/.github/dependencies.yml
+++ b/.github/dependencies.yml
@@ -21,7 +21,7 @@ dependencies:
   plugins/history-substring-search:
     repo: zsh-users/zsh-history-substring-search
     branch: master
-    version: 8f5d8a5aa9942da7b2a764c7fa79e0f36ba802f7
+    version: 8dd05bfcc12b0cd1ee9ea64be725b3d9f713cf64
     precopy: |
       set -e
       rm -f zsh-history-substring-search.plugin.zsh
diff --git a/plugins/history-substring-search/README.md b/plugins/history-substring-search/README.md
index eee279dfd..71a389535 100644
--- a/plugins/history-substring-search/README.md
+++ b/plugins/history-substring-search/README.md
@@ -235,24 +235,17 @@ History
 
 * March 2016: Geza Lore (@gezalore) greatly refactored it in pull request #55.
 
-------------------------------------------------------------------------------
-Oh My Zsh Distribution Notes
-------------------------------------------------------------------------------
+---
 
-What you are looking at now is Oh My Zsh's repackaging of zsh-history-substring-search 
-as an OMZ module inside the Oh My Zsh distribution.
+## Oh My Zsh Distribution Notes
 
-The upstream repo, zsh-users/zsh-history-substring-search, can be found on GitHub at 
+What you are looking at now is Oh My Zsh's repackaging of zsh-history-substring-search as an OMZ module inside
+the Oh My Zsh distribution.
+
+The upstream repo, zsh-users/zsh-history-substring-search, can be found on GitHub at
 https://github.com/zsh-users/zsh-history-substring-search.
 
-This downstream copy was last updated from the following upstream commit:
-
-  SHA:          8dd05bfcc12b0cd1ee9ea64be725b3d9f713cf64
-  Commit date:  2023-11-23 12:12:14 +0200
-
-Everything above this section is a copy of the original upstream's README, so things
-may differ slightly when you're using this inside OMZ. In particular, you do not
-need to set up key bindings for the up and down arrows yourself in `~/.zshrc`; the OMZ 
-plugin does that for you. You may still want to set up additional emacs- or vi-specific
-bindings as mentioned above.
-
+Everything above this section is a copy of the original upstream's README, so things may differ slightly when
+you're using this inside OMZ. In particular, you do not need to set up key bindings for the up and down arrows
+yourself in `~/.zshrc`; the OMZ plugin does that for you. You may still want to set up additional emacs- or
+vi-specific bindings as mentioned above.
diff --git a/plugins/history-substring-search/dependencies/OMZ-README.md b/plugins/history-substring-search/dependencies/OMZ-README.md
index 9a2ef4d46..c5967bb7d 100644
--- a/plugins/history-substring-search/dependencies/OMZ-README.md
+++ b/plugins/history-substring-search/dependencies/OMZ-README.md
@@ -9,10 +9,6 @@ the Oh My Zsh distribution.
 The upstream repo, zsh-users/zsh-history-substring-search, can be found on GitHub at
 https://github.com/zsh-users/zsh-history-substring-search.
 
-This downstream copy was last updated from the following upstream commit:
-
-SHA: 8dd05bfcc12b0cd1ee9ea64be725b3d9f713cf64 Commit date: 2023-11-23 12:12:14 +0200
-
 Everything above this section is a copy of the original upstream's README, so things may differ slightly when
 you're using this inside OMZ. In particular, you do not need to set up key bindings for the up and down arrows
 yourself in `~/.zshrc`; the OMZ plugin does that for you. You may still want to set up additional emacs- or