diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ae80f182dcf3872ce8b4c1cfb192d3614e8cd4e1..599ec847b10e5b32ad7701752284926fa025ca7d 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -34,9 +34,10 @@ default:
 .regression:
   stage: regression
   script:
-    - Rscript tests/regression_tests.R stable
-    - Rscript tests/regression_tests.R dev
-    - Rscript tests/regression_tests.R compare
+    - Rscript tests/testthat/regression_tests.R stable
+    - R CMD INSTALL .
+    - Rscript tests/testthat/regression_tests.R dev
+    - Rscript tests/testthat/regression_tests.R compare
 
 .check_not_cran:
   stage: tests
diff --git a/tests/testthat/helper_regression.R b/tests/testthat/helper_regression.R
index cbcbfeccc3859243dfa31a2fb0c25c9649d483fd..cbcf9dbfee09f0309b429ad54636123ba988a34a 100644
--- a/tests/testthat/helper_regression.R
+++ b/tests/testthat/helper_regression.R
@@ -10,7 +10,6 @@ StoreDevExampleResults <- function(
   package = "airGR", 
   path = file.path("tests/tmp", Sys.getenv("R_VERSION"), "dev"), 
   ...) {
-  devtools::install()
   StoreExampleResults(package = package, path = path, ...)
 }
 
diff --git a/tests/testthat/regression.R b/tests/testthat/regression.R
index eceecf120b4adf9627c3745e92b94a6f1cf3e395..2ccadba442cf1ab03b3834b7e28a6533e60f21b7 100644
--- a/tests/testthat/regression.R
+++ b/tests/testthat/regression.R
@@ -38,7 +38,7 @@ if (dir.exists(file.path(tmp_path, "stable")) & dir.exists(file.path(tmp_path, "
   lapply(X = refVarFiles, CompareWithStable, testDir = file.path(tmp_path, "dev"), regIgnore = regIgnore)
 } else {
   stop("Regression tests compared to released version needs that you run the following instructions first:\n",
-          "Rscript -e 'source(\"tests/testthat/store_examples.R\"); StoreStableExampleResults(\"airGR\");'\n",
-          "R CMD INSTALL .\n",
-          "Rscript -e 'source(\"tests/testthat/store_examples.R\"); StoreDevExampleResults(\"airGR\");'\n")
+       "Rscript tests/testthat/regression_tests.R stable\n",
+       "R CMD INSTALL .\n",
+       "Rscript tests/testthat/regression_tests.R dev")
 }
diff --git a/tests/regression_tests.R b/tests/testthat/regression_tests.R
similarity index 100%
rename from tests/regression_tests.R
rename to tests/testthat/regression_tests.R