diff --git a/Lib/_pyrepl/simple_interact.py b/Lib/_pyrepl/simple_interact.py
index ff1bdab9fea078..3b0debf2ba037b 100644
--- a/Lib/_pyrepl/simple_interact.py
+++ b/Lib/_pyrepl/simple_interact.py
@@ -31,7 +31,6 @@
 import sys
 import code
 import warnings
-import errno
 
 from .readline import _get_reader, multiline_input, append_history_file
 
diff --git a/Lib/asyncio/tools.py b/Lib/asyncio/tools.py
index f39e11fdd513b4..1d463ea09ba5b8 100644
--- a/Lib/asyncio/tools.py
+++ b/Lib/asyncio/tools.py
@@ -1,6 +1,6 @@
 """Tools to analyze tasks running in asyncio programs."""
 
-from collections import defaultdict, namedtuple
+from collections import defaultdict
 from itertools import count
 from enum import Enum
 import sys
diff --git a/Lib/shelve.py b/Lib/shelve.py
index 1010be1e09d702..9f6296667fdb6b 100644
--- a/Lib/shelve.py
+++ b/Lib/shelve.py
@@ -57,7 +57,6 @@
 """
 
 from pickle import DEFAULT_PROTOCOL, dumps, loads
-from io import BytesIO
 
 import collections.abc
 
diff --git a/Lib/test/test_free_threading/test_monitoring.py b/Lib/test/test_free_threading/test_monitoring.py
index 407bf7cbdee917..4fbd3f3415cb32 100644
--- a/Lib/test/test_free_threading/test_monitoring.py
+++ b/Lib/test/test_free_threading/test_monitoring.py
@@ -73,6 +73,9 @@ def test_instrumentation(self):
                 break
 
             self.during_threads()
+            # Sleep to avoid setting monitoring events too rapidly and
+            # overflowing the global version counter
+            time.sleep(0.0001)
 
         self.after_test()
 
diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2025-11-22-10-43-26.gh-issue-120158.41_rXd.rst b/Misc/NEWS.d/next/Core_and_Builtins/2025-11-22-10-43-26.gh-issue-120158.41_rXd.rst
new file mode 100644
index 00000000000000..b3b5f252ac07cb
--- /dev/null
+++ b/Misc/NEWS.d/next/Core_and_Builtins/2025-11-22-10-43-26.gh-issue-120158.41_rXd.rst
@@ -0,0 +1,2 @@
+Fix inconsistent state when enabling or disabling monitoring events too many
+times.
diff --git a/Python/instrumentation.c b/Python/instrumentation.c
index 72b7433022fdea..9e750433cffa89 100644
--- a/Python/instrumentation.c
+++ b/Python/instrumentation.c
@@ -2021,12 +2021,12 @@ _PyMonitoring_SetEvents(int tool_id, _PyMonitoringEventSet events)
     if (existing_events == events) {
         return 0;
     }
-    set_events(&interp->monitors, tool_id, events);
     uint32_t new_version = global_version(interp) + MONITORING_VERSION_INCREMENT;
     if (new_version == 0) {
         PyErr_Format(PyExc_OverflowError, "events set too many times");
         return -1;
     }
+    set_events(&interp->monitors, tool_id, events);
     set_global_version(tstate, new_version);
 #ifdef _Py_TIER2
     _Py_Executors_InvalidateAll(interp, 1);