diff --git a/reference/tags/assert_supports-accessible-upgrade.rst b/reference/tags/assert_supports-accessible-upgrade.rst
index ea011777b..a71c669cd 100644
--- a/reference/tags/assert_supports-accessible-upgrade.rst
+++ b/reference/tags/assert_supports-accessible-upgrade.rst
@@ -11,7 +11,7 @@ assert:supports-accessible-upgrade
 ==================================
 
 This tag is part of the assert category of tags, which are assertions made by
-the project team themselves about their deliverables maturity.
+the project team themselves about the maturity of their deliverables.
 
 The ``assert:supports-accessible-upgrade`` tag asserts that in addition to a
 deliverable supporting basic :ref:`upgrade capabilities
diff --git a/reference/tags/assert_supports-rolling-upgrade.rst b/reference/tags/assert_supports-rolling-upgrade.rst
index 03a841bed..121a6417f 100644
--- a/reference/tags/assert_supports-rolling-upgrade.rst
+++ b/reference/tags/assert_supports-rolling-upgrade.rst
@@ -11,7 +11,7 @@ assert:supports-rolling-upgrade
 ===============================
 
 This tag is part of the assert category of tags, which are assertions
-made by the project team themselves about their deliverables maturity. One
+made by the project team themselves about the maturity of their deliverables. One
 such assertion (or self-imposed contract) is about the rolling upgrade
 features that the deliverable supports.
 
diff --git a/reference/tags/assert_supports-upgrade.rst b/reference/tags/assert_supports-upgrade.rst
index 5120e4b0a..d6b2c7ced 100644
--- a/reference/tags/assert_supports-upgrade.rst
+++ b/reference/tags/assert_supports-upgrade.rst
@@ -11,7 +11,7 @@ assert:supports-upgrade
 =======================
 
 This tag is part of the assert category of tags, which are assertions
-made by the project team themselves about their deliverables maturity. One
+made by the project team themselves about the maturity of their deliverables. One
 such assertion (or self-imposed contract) is about the cold-upgrade
 features that the deliverable supports.
 
diff --git a/reference/tags/assert_supports-zero-downtime-upgrade.rst b/reference/tags/assert_supports-zero-downtime-upgrade.rst
index 88a1f082f..26606380f 100644
--- a/reference/tags/assert_supports-zero-downtime-upgrade.rst
+++ b/reference/tags/assert_supports-zero-downtime-upgrade.rst
@@ -11,7 +11,7 @@ assert:supports-zero-downtime-upgrade
 =====================================
 
 This tag is part of the assert category of tags, which are assertions made by
-the project team themselves about their deliverables maturity.
+the project team themselves about the maturity of their deliverables.
 
 The ``assert:supports-zero-downtime-upgrade`` tag asserts that in addition to a
 deliverable supporting `minimal rolling upgrade capabilities