diff --git a/cmake/toolchain/heptools-dev4.cmake b/cmake/toolchain/heptools-dev4.cmake
index 32a71ccf7a4ea67042dba8068d005a5933b34e79..6b511007bc1f4e70f565ba0e9199f5523972af90 100644
--- a/cmake/toolchain/heptools-dev4.cmake
+++ b/cmake/toolchain/heptools-dev4.cmake
@@ -58,7 +58,7 @@ LCG_external_package(json              2.5.2
 LCG_external_package(jsonschema        2.4.0                                    )
 LCG_external_package(lapack            3.5.0                                    )
 LCG_external_package(lcov              1.9                                      )
-LCG_external_package(libiconv          1.4                                      )
+LCG_external_package(libiconv          1.14                                      )
 LCG_external_package(libsvm            2.86                                     )
 LCG_external_package(libtool           1.5.26                                   )
 LCG_external_package(lxml              2.3                                      )