diff --git a/cmake/toolchain/heptools-dev-base.cmake b/cmake/toolchain/heptools-dev-base.cmake
index 256524df576fdfc92d4b44bb011e4d2c4f941cac..623dc5f1f318b18b315d9ffcf5ff0e9d29279254 100644
--- a/cmake/toolchain/heptools-dev-base.cmake
+++ b/cmake/toolchain/heptools-dev-base.cmake
@@ -499,7 +499,7 @@ LCG_external_package(ptyprocess        0.7.0
 LCG_external_package(py                1.9.0                                    )
 # dropped due to dependency conflict: requires py-prompt-toolkit > 2.0, while ipython requires < 2.0
 # LCG_external_package(py2neo            4.3.0                                    )
-LCG_external_package(py4j              0.10.9.5                                 )
+LCG_external_package(py4j              0.10.9.7                                 )
 LCG_external_package(pynacl            1.3.0                                    )
 LCG_external_package(pyanalysis        2.0                                      )
 # PSA: arrow and pyarrow use the same tarball