diff --git a/spack-environment/dev/spack.yaml b/spack-environment/dev/spack.yaml
index 52c32008e90b3d7f2a458450841f46b3148ef42d..949e92139396ad03d50f90aca8970043f775a034 100644
--- a/spack-environment/dev/spack.yaml
+++ b/spack-environment/dev/spack.yaml
@@ -30,7 +30,7 @@ spack:
     - heppdt@2.06.01
     - imagemagick@7.0.8-7
     - intel-tbb@2020.3
-    - irt@1.0.5
+    - irt@1.0.6
     - jana2@2.1.0 -ipo +podio +root +zmq
     - lcov@1.15
     - madx@5.08.01