diff --git a/tests/unit/infra/test_code_deployment.py b/tests/unit/infra/test_code_deployment.py
index ba1276ccf4..f97ba18f7d 100644
--- a/tests/unit/infra/test_code_deployment.py
+++ b/tests/unit/infra/test_code_deployment.py
@@ -1018,6 +1018,7 @@ def _run_cancellation_rollback(
         sleeps = [int(line.removeprefix("sleep:")) for line in result.stderr.splitlines() if line.startswith("sleep:")]
         return result, calls, sleeps
 
+    @unittest.skipIf(os.name == "nt", "POSIX signal handling is not reliable in Git Bash on Windows")
     def test_cancellation_keeps_public_access_disabled_until_connection_removal(self) -> None:
         for signal, exit_code in (("TERM", 143), ("INT", 130)):
             with self.subTest(signal=signal):
@@ -1032,6 +1033,7 @@ def test_cancellation_keeps_public_access_disabled_until_connection_removal(self
                 assert result.stdout.count("Waiting for ACA private endpoint connection removal") == 1
                 assert sleeps == [15]
 
+    @unittest.skipIf(os.name == "nt", "POSIX signal handling is not reliable in Git Bash on Windows")
     def test_cancellation_rolls_back_only_infrastructure_after_connection_removal(self) -> None:
         for signal, exit_code in (("TERM", 143), ("INT", 130)):
             with self.subTest(signal=signal):
diff --git a/tests/unit/infra/test_docker_ci.py b/tests/unit/infra/test_docker_ci.py
index 55cf582281..4879643803 100644
--- a/tests/unit/infra/test_docker_ci.py
+++ b/tests/unit/infra/test_docker_ci.py
@@ -491,7 +491,12 @@ def test_readiness_is_bounded_and_requires_http_200(*, bash_path: str, tmp_path:
         "frontend-http-failure",
         "missing-frontend",
         "diagnostics-failure",
-        "signal",
+        pytest.param(
+            "signal",
+            marks=pytest.mark.skipif(
+                os.name == "nt", reason="POSIX signal handling is not reliable in Git Bash on Windows"
+            ),
+        ),
     ],
 )
 def test_smoke_failures_dump_diagnostics_and_remove_container(*, bash_path: str, tmp_path: Path, case: str) -> None:
@@ -513,6 +518,7 @@ def test_smoke_failures_dump_diagnostics_and_remove_container(*, bash_path: str,
         assert result.returncode == 143
 
 
+@pytest.mark.skipif(os.name == "nt", reason="POSIX signal handling is not reliable in Git Bash on Windows")
 @pytest.mark.parametrize("cleanup_stage", ["logs", "rm"])
 @pytest.mark.parametrize("cleanup_signal", ["INT", "TERM"])
 @pytest.mark.parametrize(