diff --git a/docs/changelog.rst b/docs/changelog.txt
similarity index 100%
rename from docs/changelog.rst
rename to docs/changelog.txt
diff --git a/docs/conf.py b/docs/conf.py
index 002ca4858..b50997f68 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -39,7 +39,7 @@
 templates_path = ['templates']
 
 # The suffix of source filenames.
-source_suffix = '.rst'
+source_suffix = '.txt'
 
 # The encoding of source files.
 #source_encoding = 'utf-8'
diff --git a/docs/index.rst b/docs/index.txt
similarity index 100%
rename from docs/index.rst
rename to docs/index.txt
diff --git a/docs/overview.rst b/docs/overview.txt
similarity index 100%
rename from docs/overview.rst
rename to docs/overview.txt
diff --git a/docs/performance.rst b/docs/performance.txt
similarity index 100%
rename from docs/performance.rst
rename to docs/performance.txt
diff --git a/docs/protocol.rst b/docs/protocol.txt
similarity index 100%
rename from docs/protocol.rst
rename to docs/protocol.txt
diff --git a/docs/tutorial/conclusion.rst b/docs/tutorial/conclusion.txt
similarity index 100%
rename from docs/tutorial/conclusion.rst
rename to docs/tutorial/conclusion.txt
diff --git a/docs/tutorial/index.rst b/docs/tutorial/index.txt
similarity index 100%
rename from docs/tutorial/index.rst
rename to docs/tutorial/index.txt
diff --git a/docs/tutorial/introduction.rst b/docs/tutorial/introduction.txt
similarity index 100%
rename from docs/tutorial/introduction.rst
rename to docs/tutorial/introduction.txt
diff --git a/docs/tutorial/object-store.rst b/docs/tutorial/object-store.txt
similarity index 100%
rename from docs/tutorial/object-store.rst
rename to docs/tutorial/object-store.txt
diff --git a/docs/tutorial/repo.rst b/docs/tutorial/repo.txt
similarity index 100%
rename from docs/tutorial/repo.rst
rename to docs/tutorial/repo.txt
diff --git a/dulwich/tests/__init__.py b/dulwich/tests/__init__.py
index 8c9debdbc..1499520a4 100644
--- a/dulwich/tests/__init__.py
+++ b/dulwich/tests/__init__.py
@@ -108,7 +108,7 @@ def tutorial_test_suite():
         'object-store',
         'conclusion',
         ]
-    tutorial_files = ["../../docs/tutorial/%s.rst" % name for name in tutorial]
+    tutorial_files = ["../../docs/tutorial/%s.txt" % name for name in tutorial]
     def setup(test):
         test.__dulwich_tempdir = tempfile.mkdtemp()
         os.chdir(test.__dulwich_tempdir)