diff --git a/src/corelib/text/qbytearray.cpp b/src/corelib/text/qbytearray.cpp
index 0b63e13cff0..77118ea5d73 100644
--- a/src/corelib/text/qbytearray.cpp
+++ b/src/corelib/text/qbytearray.cpp
@@ -2013,7 +2013,7 @@ void QByteArray::expand(qsizetype i)
 
 /*!
     \fn QByteArray &QByteArray::nullTerminate()
-    \since 6.9
+    \since 6.10
 
     If this byte array's data isn't null-terminated, this method will make
     a deep-copy of the data and make it null-terminated.
@@ -2028,7 +2028,7 @@ void QByteArray::expand(qsizetype i)
 
 /*!
     \fn QByteArray QByteArray::nullTerminated() const &
-    \since 6.9
+    \since 6.10
 
     Returns a copy of this byte array that is always null-terminated.
     See nullTerminate().
diff --git a/src/corelib/text/qstring.cpp b/src/corelib/text/qstring.cpp
index f23ce02b5f0..ba2f2aabd8f 100644
--- a/src/corelib/text/qstring.cpp
+++ b/src/corelib/text/qstring.cpp
@@ -7065,7 +7065,7 @@ const ushort *QString::utf16() const
 
 /*!
     \fn QString &QString::nullTerminate()
-    \since 6.9
+    \since 6.10
 
     If this string data isn't null-terminated, this method will make a deep
     copy of the data and make it null-terminated().
@@ -7080,7 +7080,7 @@ const ushort *QString::utf16() const
 
 /*!
     \fn QString QString::nullTerminated() const &
-    \since 6.9
+    \since 6.10
 
     Returns a copy of this string that is always null-terminated.
     See nullTerminate().