diff --git a/contrib/contacts/Makefile b/contrib/contacts/Makefile
index a2990f0dcb..9c4ca4f3bc 100644
--- a/contrib/contacts/Makefile
+++ b/contrib/contacts/Makefile
@@ -34,7 +34,7 @@ GIT_CONTACTS := git-contacts
 
 GIT_CONTACTS_DOC := git-contacts.1
 GIT_CONTACTS_XML := git-contacts.xml
-GIT_CONTACTS_TXT := git-contacts.txt
+GIT_CONTACTS_TXT := git-contacts.adoc
 GIT_CONTACTS_HTML := git-contacts.html
 
 doc: $(GIT_CONTACTS_DOC) $(GIT_CONTACTS_HTML)
diff --git a/contrib/contacts/git-contacts.txt b/contrib/contacts/git-contacts.adoc
similarity index 100%
rename from contrib/contacts/git-contacts.txt
rename to contrib/contacts/git-contacts.adoc
diff --git a/contrib/contacts/meson.build b/contrib/contacts/meson.build
index 6ec92f47c4..73d82dfe52 100644
--- a/contrib/contacts/meson.build
+++ b/contrib/contacts/meson.build
@@ -16,7 +16,7 @@ if get_option('docs').contains('man')
       '@INPUT@',
     ],
     depends: documentation_deps,
-    input: 'git-contacts.txt',
+    input: 'git-contacts.adoc',
     output: 'git-contacts.xml',
   )
 
@@ -47,7 +47,7 @@ if get_option('docs').contains('html')
       '@INPUT@',
     ],
     depends: documentation_deps,
-    input: 'git-contacts.txt',
+    input: 'git-contacts.adoc',
     output: 'git-contacts.html',
     install: true,
     install_dir: get_option('datadir') / 'doc/git-doc',