diff --git a/Gemfile b/Gemfile
index f4e82ae..6a445cf 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,6 +2,7 @@ source "https://rubygems.org"
 
 gem "webrick", "~> 1.7"
 gem "just-the-docs"
+gem "jekyll-include-cache"
 
 group :jekyll_plugins do
     gem "jekyll-remote-theme", "~> 0.4.2"
diff --git a/Gemfile.lock b/Gemfile.lock
index 6f18e02..80a7bea 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -29,6 +29,8 @@ GEM
       rouge (~> 3.0)
       safe_yaml (~> 1.0)
       terminal-table (~> 2.0)
+    jekyll-include-cache (0.2.1)
+      jekyll (>= 3.7, < 5.0)
     jekyll-remote-theme (0.4.3)
       addressable (~> 2.0)
       jekyll (>= 3.5, < 5.0)
@@ -75,6 +77,7 @@ PLATFORMS
   x64-mingw-ucrt
 
 DEPENDENCIES
+  jekyll-include-cache
   jekyll-remote-theme (~> 0.4.2)
   just-the-docs
   webrick (~> 1.7)