diff --git a/DESCRIPTION b/DESCRIPTION
index 0690b722..a970e1a7 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: bbotk
 Title: Black-Box Optimization Toolkit
-Version: 0.6.0.9000
+Version: 0.7.0
 Authors@R:
     c(person(given = "Marc",
              family = "Becker",
diff --git a/NEWS.md b/NEWS.md
index 0bd59762..ccd73fc8 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,4 +1,4 @@
-# bbotk 0.6.0.9000
+# bbotk 0.7.0
 
 * fix: `Terminator$format(with_params = TRUE)` printed an empty list when no parameter was set.
 * refactor: `OptimizerIrace` automatically added the `instances` parameter to `Objective$constants`.
diff --git a/R/OptimizerIrace.R b/R/OptimizerIrace.R
index b5cf5b86..532725e1 100644
--- a/R/OptimizerIrace.R
+++ b/R/OptimizerIrace.R
@@ -244,6 +244,8 @@ target_runner_default = function(experiment, exec.target.runner, scenario, targe
 
 paradox_to_irace = function(param_set, digits) {
   assertClass(param_set, "ParamSet")
+  # workaround for mlr3tuning 0.15.0
+  digits = assert_int(digits %??% 15, lower = 0)
   if ("ParamUty" %in% param_set$class) stop("<ParamUty> not supported by <OptimizerIrace>")
 
   # types