Plans for a million Welsh speakers by 2050 will fail without a substantial increase in teachers speaking the language, a Senedd report has warned.
According to the 2021 Census, the number of Welsh speakers has dropped from 562,000 to 538,000 since 2011.
The report said there was not enough staff for the expansion to Welsh medium education needed and insufficient Welsh teaching in English-medium schools.
Ministers said they had set out ways to develop the Welsh-speaking workforce.
Census data also found a decrease in children and young people able to speak Welsh - particularly between the ages of three and 15.
The Welsh government funds training programmes for teachers wanting to learn or improve their Welsh.
