From 61515f1377bd270f2ab6c14fc45bc1563e6e6956 Mon Sep 17 00:00:00 2001
From: David Constenla <1520001+daconstenla@users.noreply.github.com>
Date: Thu, 29 Jan 2026 13:32:54 +0100
Subject: [PATCH] chore: bump `helm` support to `4.x`

the new version of `helm` does not introduce breaking changes that affect the features used by kpops
https://helm.sh/docs/overview\#upgrading-to-helm-4
---
 kpops/component_handlers/helm_wrapper/helm.py              | 4 ++--
 tests/component_handlers/helm_wrapper/test_helm_wrapper.py | 6 +++++-
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/kpops/component_handlers/helm_wrapper/helm.py b/kpops/component_handlers/helm_wrapper/helm.py
index 0b527a841..b8763017c 100644
--- a/kpops/component_handlers/helm_wrapper/helm.py
+++ b/kpops/component_handlers/helm_wrapper/helm.py
@@ -55,8 +55,8 @@ def __init__(self, helm_config: HelmConfig) -> None:
         self._context = helm_config.context
         self._debug = helm_config.debug
 
-        if self.version.major != 3:
-            msg = f"The supported Helm version is 3.x.x. The current Helm version is {self.version.major}.{self.version.minor}.{self.version.patch}"
+        if self.version.major < 3 or self.version.major > 4:
+            msg = f"The supported Helm version is 3.x.x|4.x.x. The current Helm version is {self.version.major}.{self.version.minor}.{self.version.patch}"
             raise RuntimeError(msg)
 
     @cached(cache={}, key=cache_key)
diff --git a/tests/component_handlers/helm_wrapper/test_helm_wrapper.py b/tests/component_handlers/helm_wrapper/test_helm_wrapper.py
index cca93c1c6..f49cdf6c6 100644
--- a/tests/component_handlers/helm_wrapper/test_helm_wrapper.py
+++ b/tests/component_handlers/helm_wrapper/test_helm_wrapper.py
@@ -594,6 +594,10 @@ def test_should_call_run_command_method_when_helm_template_without_optional_args
             ("v3.12.0", Version(3, 12, 0)),
             ("v3.12", Version(3, 12, 0)),
             ("v3", Version(3, 0, 0)),
+            ("v4.1.0+4553a0a", Version(4, 1, 0)),
+            ("v4.1.0", Version(4, 1, 0)),
+            ("v4.1", Version(4, 1, 0)),
+            ("v4", Version(4, 0, 0)),
         ],
     )
     def test_parse_version(
@@ -620,7 +624,7 @@ def test_should_raise_exception_if_helm_version_is_old(
         mock_execute.return_value = "v2.9.0+gc9f554d"
         with pytest.raises(
             RuntimeError,
-            match="The supported Helm version is 3.x.x. The current Helm version is 2.9.0",
+            match="The supported Helm version is 3.x.x|4.x.x. The current Helm version is 2.9.0",
         ):
             Helm(helm_config=HelmConfig())