diff --git a/cuda_core/tests/test_rlcompleter_patch.py b/cuda_core/tests/test_rlcompleter_patch.py
index 4809b71a875..68bd7b6e4f7 100644
--- a/cuda_core/tests/test_rlcompleter_patch.py
+++ b/cuda_core/tests/test_rlcompleter_patch.py
@@ -96,7 +96,9 @@ def test_patched_completion_succeeds_on_non_ipc_resource():
     assert "allocation_handle: True" in result.stdout, result.stdout
 
 
-@pytest.mark.skipif(sys.version_info >= (3, 15), reason="Python 3.15 fixed the rlcompleter bug upstream")
+@pytest.mark.skipif(
+    sys.version_info >= (3, 13), reason="Python 3.13.13, 3.14.6 and 3.15 fixed the rlcompleter bug upstream"
+)
 def test_opt_out_env_var_disables_patch_even_when_interactive():
     """`CUDA_CORE_DONT_FIX_TAB_COMPLETION=1` must short-circuit before the
     interactive check, so the bug reproduces again even under PYTHONINSPECT."""
diff --git a/cuda_pathfinder/pyproject.toml b/cuda_pathfinder/pyproject.toml
index dfbef9dd18d..9f0a955cc01 100644
--- a/cuda_pathfinder/pyproject.toml
+++ b/cuda_pathfinder/pyproject.toml
@@ -29,7 +29,7 @@ cu12 = [
     "nvidia-cusparselt-cu12",
     "nvidia-libmathdx-cu12",
     "nvidia-nccl-cu12; sys_platform != 'win32'",
-    "nvidia-nvshmem-cu12; sys_platform != 'win32'",
+    "nvidia-nvshmem-cu12!=3.7.0; sys_platform != 'win32'",
 ]
 cu13 = [
     "cuda-toolkit[nvcc,cublas,nvrtc,cudart,cufft,curand,cusolver,cusparse,npp,nvfatbin,nvjitlink,nvjpeg,cccl,cupti,profiler,nvvm]==13.*",
@@ -43,7 +43,7 @@ cu13 = [
     "nvidia-cusparselt-cu13",
     "nvidia-libmathdx-cu13",
     "nvidia-nccl-cu13; sys_platform != 'win32'",
-    "nvidia-nvshmem-cu13; sys_platform != 'win32'",
+    "nvidia-nvshmem-cu13!=3.7.0; sys_platform != 'win32'",
 ]
 host = [
     # TODO: remove the Python 3.15 guard once 3.15 is officially supported