diff --git a/python/core/auto_generated/qgsmaplayerfactory.sip.in b/python/core/auto_generated/qgsmaplayerfactory.sip.in
index 91a6ca17f4a..2b418b71b0f 100644
--- a/python/core/auto_generated/qgsmaplayerfactory.sip.in
+++ b/python/core/auto_generated/qgsmaplayerfactory.sip.in
@@ -15,7 +15,7 @@ class QgsMapLayerFactory
 %Docstring
 Contains utility functions for creating map layers.
 
-.. versionadded:: 3.20
+.. versionadded:: 3.18.1
 %End
 
 %TypeHeaderCode
diff --git a/python/core/auto_generated/qgsprovidermetadata.sip.in b/python/core/auto_generated/qgsprovidermetadata.sip.in
index 7a468b60c18..83eb4e565aa 100644
--- a/python/core/auto_generated/qgsprovidermetadata.sip.in
+++ b/python/core/auto_generated/qgsprovidermetadata.sip.in
@@ -160,7 +160,7 @@ Returns the provider metadata capabilities.
 %Docstring
 Returns the provider's capabilities.
 
-.. versionadded:: 3.20
+.. versionadded:: 3.18.1
 %End
 
  QString library() const /Deprecated/;
diff --git a/src/core/qgsmaplayerfactory.h b/src/core/qgsmaplayerfactory.h
index c514fe2de12..2bcf1a5f76c 100644
--- a/src/core/qgsmaplayerfactory.h
+++ b/src/core/qgsmaplayerfactory.h
@@ -27,7 +27,7 @@
  * \ingroup core
  * \brief Contains utility functions for creating map layers.
  *
- * \since QGIS 3.20
+ * \since QGIS 3.18.1
  */
 class CORE_EXPORT QgsMapLayerFactory
 {
diff --git a/src/core/qgsprovidermetadata.h b/src/core/qgsprovidermetadata.h
index 9189b70c3df..0a808836ecd 100644
--- a/src/core/qgsprovidermetadata.h
+++ b/src/core/qgsprovidermetadata.h
@@ -156,7 +156,7 @@ class CORE_EXPORT QgsProviderMetadata : public QObject
     /**
      * Provider capabilities
      *
-     * \since QGIS 3.20
+     * \since QGIS 3.18.1
      */
     enum ProviderCapability
     {
@@ -213,7 +213,7 @@ class CORE_EXPORT QgsProviderMetadata : public QObject
     /**
      * Returns the provider's capabilities.
      *
-     * \since QGIS 3.20
+     * \since QGIS 3.18.1
      */
     virtual QgsProviderMetadata::ProviderCapabilities providerCapabilities() const;