diff --git a/site/en/basics/index.md b/site/en/basics/index.md
index 747a2276d874ad..93b1d070197b05 100644
--- a/site/en/basics/index.md
+++ b/site/en/basics/index.md
@@ -3,6 +3,7 @@ Book: /_book.yaml
 
 # Build Basics
 
+{% dynamic setvar source_file "site/en/basics/index.md" %}
 {% include "_buttons.html" %}
 
 A build system is one of the most important parts of an engineering organization
diff --git a/site/en/contribute/index.md b/site/en/contribute/index.md
index 47ee5819fd7132..18265c10bf68b4 100644
--- a/site/en/contribute/index.md
+++ b/site/en/contribute/index.md
@@ -3,6 +3,7 @@ Book: /_book.yaml
 
 # Contributing to Bazel
 
+{% dynamic setvar source_file "site/en/contribute/index.md" %}
 {% include "_buttons.html" %}
 
 There are many ways to help the Bazel project and ecosystem.
diff --git a/site/en/install/index.md b/site/en/install/index.md
index a463389cbfd1ae..a5c293424546e9 100644
--- a/site/en/install/index.md
+++ b/site/en/install/index.md
@@ -3,6 +3,7 @@ Book: /_book.yaml
 
 # Installing Bazel
 
+{% dynamic setvar source_file "site/en/install/index.md" %}
 {% include "_buttons.html" %}
 
 This page describes the various platforms supported by Bazel and links
diff --git a/site/en/migrate/index.md b/site/en/migrate/index.md
index bed23173d831bb..e5be2efbd50fea 100644
--- a/site/en/migrate/index.md
+++ b/site/en/migrate/index.md
@@ -3,6 +3,7 @@ Book: /_book.yaml
 
 # Migrating to Bazel
 
+{% dynamic setvar source_file "site/en/migrate/index.md" %}
 {% include "_buttons.html" %}
 
 This page links to migration guides for Bazel.
diff --git a/site/en/release/index.md b/site/en/release/index.md
index 17a729ee084e22..22d02bd34f2006 100644
--- a/site/en/release/index.md
+++ b/site/en/release/index.md
@@ -3,6 +3,7 @@ Book: /_book.yaml
 
 # Release Policy
 
+{% dynamic setvar source_file "site/en/release/index.md" %}
 {% include "_buttons.html" %}
 
 Bazel maintains a
diff --git a/site/en/rules/index.md b/site/en/rules/index.md
index b2c60a741462a0..dd3599f9a04be8 100644
--- a/site/en/rules/index.md
+++ b/site/en/rules/index.md
@@ -3,6 +3,7 @@ Book: /_book.yaml
 
 # Rules
 
+{% dynamic setvar source_file "site/en/rules/index.md" %}
 {% include "_buttons.html" %}
 
 The Bazel ecosystem has a growing and evolving set of rules to support popular
diff --git a/site/en/versions/index.md b/site/en/versions/index.md
index 4df14b27dce305..63c452b1f5795a 100644
--- a/site/en/versions/index.md
+++ b/site/en/versions/index.md
@@ -3,6 +3,7 @@ Book: /_book.yaml
 
 # Documentation Versions
 
+{% dynamic setvar source_file "site/en/versions/index.md" %}
 {% include "_buttons.html" %}
 
 The documentation on this website represents the latest in Bazel. Documentation