diff --git a/Graphcore/benchmarks/rnnt/implementations/popart/training/requirements.txt b/Graphcore/benchmarks/rnnt/implementations/popart/training/requirements.txt
index 917e6a1e1..77be496fb 100644
--- a/Graphcore/benchmarks/rnnt/implementations/popart/training/requirements.txt
+++ b/Graphcore/benchmarks/rnnt/implementations/popart/training/requirements.txt
@@ -8,7 +8,7 @@ sentencepiece==0.1.94
 pandas==1.1.5
 tqdm==4.46.1
 pyyaml>=5.3
-onnx==1.8.1
+onnx==1.15.0
 wandb==0.12.1
 mpi4py>=3.0.3
 pytest==5.4.1