diff --git a/CHANGELOG.md b/CHANGELOG.md
index cd49da66c..f97f2ea93 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -40,6 +40,7 @@
 - main: suggest --os flag in unsupported OS error message to help users override ELF OS detection @devs6186 #2577
 - render: escape sample-controlled strings before passing to Rich to prevent MarkupError @devs6186 #2699
 - rules: handle empty or invalid YAML documents gracefully in `Rule.from_yaml` and `get_rules` @devs6186 #2900
+- rules cache: invalidate stale cache format after `_RuleFeatureIndex` schema update to avoid runtime AttributeError in matching
 - Fixed insecure deserialization vulnerability in YAML loading @0x1622 (#2770)
 - loader: gracefully handle ELF files with unsupported architectures kamranulhaq2002@gmail.com #2800
 - loader: handle SegmentationViolation for malformed ELF files @kami922 #2799
@@ -67,6 +68,7 @@
 ### Development
 
 - doc: document that default output shows top-level matches only; -v/-vv show nested matches @devs6186 #1410
+- tests: skip `capa2sarif.py` script test when optional dependencies (`sarif_om`, `jschema_to_python`) are not installed
 - doc: fix typo in usage.md, add documentation links to README @devs6186 #2274
 - doc: add table comparing ways to consume capa output (CLI, IDA, Ghidra, dynamic sandbox, web) @devs6186 #2273
 - binja: add mypy config for top-level binaryninja module to fix mypy issues @devs6186 #2399
diff --git a/capa/rules/cache.py b/capa/rules/cache.py
index f23e61212..3ebf8a976 100644
--- a/capa/rules/cache.py
+++ b/capa/rules/cache.py
@@ -79,7 +79,7 @@ def get_cache_path(cache_dir: Path, id: CacheIdentifier) -> Path:
 
 
 MAGIC = b"capa"
-VERSION = b"\x00\x00\x00\x01"
+VERSION = b"\x00\x00\x00\x02"
 
 
 @dataclass
@@ -159,7 +159,7 @@ def load_cached_ruleset(cache_dir: Path, rule_contents: list[bytes]) -> Optional
 
     try:
         cache = RuleCache.load(buf)
-    except AssertionError:
+    except (AssertionError, EOFError, pickle.UnpicklingError, zlib.error, AttributeError, TypeError, ValueError):
         logger.debug("rule set cache is invalid: %s", path)
         # delete the cache that seems to be invalid.
         path.unlink()
diff --git a/tests/test_scripts.py b/tests/test_scripts.py
index 20b36f0b9..8a7cbb4a9 100644
--- a/tests/test_scripts.py
+++ b/tests/test_scripts.py
@@ -18,6 +18,7 @@
 import logging
 import textwrap
 import subprocess
+import importlib.util
 from pathlib import Path
 
 import pytest
@@ -25,6 +26,7 @@
 logger = logging.getLogger(__name__)
 
 CD = Path(__file__).resolve().parent
+HAS_CAPA2SARIF_DEPS = importlib.util.find_spec("sarif_om") is not None and importlib.util.find_spec("jschema_to_python") is not None
 
 
 def get_script_path(s: str):
@@ -66,6 +68,9 @@ def get_rule_path():
         pytest.param(
             "capa2sarif.py",
             [Path(__file__).resolve().parent / "data" / "rd" / "Practical Malware Analysis Lab 01-01.dll_.json"],
+            marks=pytest.mark.skipif(
+                not HAS_CAPA2SARIF_DEPS, reason="capa2sarif.py requires optional deps: sarif_om and jschema_to_python"
+            ),
         ),
         # testing some variations of linter script
         pytest.param("lint.py", ["-t", "create directory", get_rules_path()]),