diff --git a/DESCRIPTION b/DESCRIPTION
index 3562423..17a145b 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: simTool
 Type: Package
 Title: Conduct Simulation Studies with a Minimal Amount of Source Code
-Version: 1.1.8
+Version: 1.1.9
 Authors@R: person("Marsel", "Scheer", role = c("aut", "cre"), email = "scheer@freescience.de")
 Maintainer: Marsel Scheer <scheer@freescience.de>
 Description: Tool for statistical simulations that have two components. 
@@ -34,6 +34,6 @@ Suggests:
     covr
 License: GPL-3
 VignetteBuilder: knitr
-RoxygenNote: 7.3.2
+RoxygenNote: 7.3.3
 URL: https://marselscheer.github.io/simTool/
 BugReports: https://github.com/MarselScheer/simTool/issues
diff --git a/NEWS.md b/NEWS.md
index 4b19ee0..7f3aea5 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,4 +1,9 @@
 
+Version 1.1.9
+=========================
+
+* address deprecated .dots argument of group_by() due to upcoming dplyr version 1.2.0
+
 Version 1.1.8
 =========================
 
diff --git a/R/define_simulation.R b/R/define_simulation.R
index 70bac63..3ed53e7 100644
--- a/R/define_simulation.R
+++ b/R/define_simulation.R
@@ -40,10 +40,9 @@ define_simulation <- function(pf, discard_generated_data, cluster,
       )
       res <- purrr::map(res, ~ do.call("bind_or_combine", .))
       if (!is.null(summary_fun) && !is.null(group_for_summary)) {
-        class(group_for_summary) <- "list"
         res <- lapply(summary_fun, function(f) {
           purrr::map(res, ~ dplyr::summarize_all(
-            dplyr::group_by(., .dots = group_for_summary), f
+            dplyr::group_by(., dplyr::pick(dplyr::all_of(group_for_summary))), f
           ))
         })
       } else {
diff --git a/README.Rmd b/README.Rmd
index b019cdf..5a4431d 100644
--- a/README.Rmd
+++ b/README.Rmd
@@ -14,7 +14,7 @@ knitr::opts_chunk$set(
 
 
 [![R build status](https://github.com/MarselScheer/simTool/workflows/R-CMD-check/badge.svg)](https://github.com/MarselScheer/simTool/actions)
-[![Coverage Status](https://img.shields.io/codecov/c/github/MarselScheer/simTool/develop.svg)](https://codecov.io/github/MarselScheer/simTool?branch=develop)
+[![codecov](https://codecov.io/gh/MarselScheer/simTool/branch/development/graph/badge.svg?token=aCoLwwqLrB)](https://codecov.io/gh/MarselScheer/simTool)
 [![lifecycle](https://img.shields.io/badge/lifecycle-stable-brightgreen.svg)](https://lifecycle.r-lib.org/articles/stages.html)
 [![Project Status: Active – The project has reached a stable, usable
 state and is being actively
diff --git a/README.md b/README.md
index d1ee4b9..de465ac 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,7 @@
 
 [![R build
 status](https://github.com/MarselScheer/simTool/workflows/R-CMD-check/badge.svg)](https://github.com/MarselScheer/simTool/actions)
+[![codecov](https://codecov.io/gh/MarselScheer/simTool/branch/development/graph/badge.svg?token=aCoLwwqLrB)](https://codecov.io/gh/MarselScheer/simTool)
 [![lifecycle](https://img.shields.io/badge/lifecycle-stable-brightgreen.svg)](https://lifecycle.r-lib.org/articles/stages.html)
 [![Project Status: Active – The project has reached a stable, usable
 state and is being actively
@@ -63,9 +64,9 @@ using confidence levels 0.8, 0.9, 0.95 are applied. This is repeated
     #> Number of data generating functions: 4
     #> Number of analyzing procedures: 3
     #> Number of replications: 1000
-    #> Estimated replications per hour: 1318457
-    #> Start of the simulation: 2025-04-05 05:37:59.800157
-    #> End of the simulation: 2025-04-05 05:38:02.530619
+    #> Estimated replications per hour: 1328974
+    #> Start of the simulation: 2026-01-24 07:30:30.279282
+    #> End of the simulation: 2026-01-24 07:30:32.988137
 
 ## Installation