diff --git a/.gitmodules b/.gitmodules
index 3e2dfb9f..d0310ec3 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "plugins/syntax-highlighting"]
 	path = plugins/syntax-highlighting
 	url = https://github.com/sorin-ionescu/zsh-syntax-highlighting.git
+[submodule "plugins/history-substring-search"]
+	path = plugins/history-substring-search
+	url = https://github.com/sorin-ionescu/zsh-history-substring-search.git
diff --git a/plugins/history-substring-search b/plugins/history-substring-search
new file mode 160000
index 00000000..a2daf01e
--- /dev/null
+++ b/plugins/history-substring-search
@@ -0,0 +1 @@
+Subproject commit a2daf01e5aefafb008897f655f50c2231ba0fbae