diff --git a/docs/conf.py b/docs/conf.py
index 39ffc354..71c87dc6 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -47,6 +47,7 @@
     'javasphinx',
     'sphinx_csharp.csharp',
     'sphinxcontrib.makedomain',
+    'sphinx_tags',
 #    "sphinx_rust",
 ]
 rust_crates = [
@@ -65,6 +66,8 @@
 templates_path = ['_templates']
 exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store']
 
+tags_create_tags = True
+
 language = 'english'
 
 # -- Options for HTML output -------------------------------------------------
diff --git a/docs/src/c/p0003.rst b/docs/src/c/p0003.rst
index df7c64ab..e5ef224f 100644
--- a/docs/src/c/p0003.rst
+++ b/docs/src/c/p0003.rst
@@ -23,3 +23,6 @@ Solution
 .. literalinclude:: ../../../c/src/p0003.c
    :language: C
    :linenos:
+
+.. tags:: primes
+