diff --git a/pyproject.toml b/pyproject.toml
index 67a3a1f..09aef64 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "delta-barth"
-version = "0.5.11"
+version = "0.5.12dev1"
 description = "workflows and pipelines for the Python-based Plugin of Delta Barth's ERP system"
 authors = [
     {name = "Florian Förster", email = "f.foerster@d-opt.com"},
@@ -74,7 +74,7 @@ directory = "reports/coverage"
 
 
 [tool.bumpversion]
-current_version = "0.5.11"
+current_version = "0.5.12dev1"
 parse = """(?x)
     (?P<major>0|[1-9]\\d*)\\.
     (?P<minor>0|[1-9]\\d*)\\.
diff --git a/src/delta_barth/__init__.py b/src/delta_barth/__init__.py
index e69de29..65cc7ea 100644
--- a/src/delta_barth/__init__.py
+++ b/src/delta_barth/__init__.py
@@ -0,0 +1,3 @@
+import pip_system_certs.wrapt_requests
+
+pip_system_certs.wrapt_requests.inject_truststore()