diff --git a/e2e/test/BUILD.bazel b/e2e/test/BUILD.bazel
index f107770dd2a8876206e8656400476060a021c28d..e615b8dba01fa0531c7eca47f4be4f292824768b 100644
--- a/e2e/test/BUILD.bazel
+++ b/e2e/test/BUILD.bazel
@@ -34,8 +34,37 @@ py_binary(
 )
 
 labgrid_test(
-    name = "forward-env-test",
+    name = "src-env",
     size = "small",
     src = ":inner-with-env",
     platform = "@rules_labgrid//labgrid/platform:localhost",
 )
+
+py_binary(
+    name = "inner-without-env",
+    srcs = ["greeting.py"],
+    main = "greeting.py",
+)
+
+labgrid_test(
+    name = "env",
+    size = "small",
+    src = ":inner-without-env",
+    env = {"GREETING": "hello"},
+    platform = "@rules_labgrid//labgrid/platform:localhost",
+)
+
+py_binary(
+    name = "inner-with-override-env",
+    srcs = ["greeting.py"],
+    env = {"GREETING": "olá"},
+    main = "greeting.py",
+)
+
+labgrid_test(
+    name = "override-src-env",
+    size = "small",
+    src = ":inner-with-override-env",
+    env = {"GREETING": "hello"},
+    platform = "@rules_labgrid//labgrid/platform:localhost",
+)
diff --git a/labgrid/test/rule.bzl b/labgrid/test/rule.bzl
index e0f899427f685a9a596fd76b2e378817f5b90f15..9a81490c9d4225cf01d8d87b18bcc1309ad80e37 100644
--- a/labgrid/test/rule.bzl
+++ b/labgrid/test/rule.bzl
@@ -19,6 +19,10 @@ ATTRS = {
         doc = "Platform to transition to.",
         providers = [platform_common.PlatformInfo],
     ),
+    "env": attr.string_dict(
+        doc = "Environment variables to set in the test environment.",
+        default = {},
+    ),
     "_executor": attr.label(
         doc = "The labgrid environment executor",
         default = "//labgrid/executor",
@@ -53,7 +57,7 @@ def _get(pair):
     return ["--get", "{}:{}".format(key, value)]
 
 def implementation(ctx):
-    env = _run_env(ctx.attr.src) | {
+    env = _run_env(ctx.attr.src) | ctx.attr.env | {
         "XML_OUTPUT_FILE": "results.xml",
         "BAZEL_TEST": "1",
     }