diff --git a/tests/c_cpp/reference-cppcheck-results.xml b/tests/c_cpp/reference-cppcheck-results.xml
index f071e3b..22c11fd 100644
--- a/tests/c_cpp/reference-cppcheck-results.xml
+++ b/tests/c_cpp/reference-cppcheck-results.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <results version="2">
-    <cppcheck version="2.10"/>
+    <cppcheck version="2.13.0"/>
     <errors>
         <error id="arrayIndexOutOfBounds" severity="error" msg="Array &apos;a[10]&apos; accessed at index 10, which is out of bounds." verbose="Array &apos;a[10]&apos; accessed at index 10, which is out of bounds." cwe="788" file0="tests/c_cpp/cppcheck/main.c">
             <location file="tests/c_cpp/cppcheck/main.c" line="7" column="6" info="Array index out of bounds"/>
diff --git a/tests/python/reference-pylint-results.json b/tests/python/reference-pylint-results.json
index 0fb4c01..bcbb093 100644
--- a/tests/python/reference-pylint-results.json
+++ b/tests/python/reference-pylint-results.json
@@ -21,8 +21,8 @@
         "endLine": 13,
         "endColumn": 29,
         "path": "tests/python/src/simplecaesar.py",
-        "symbol": "unneeded-not",
+        "symbol": "unnecessary-negation",
         "message": "Consider changing \"not not choice == 'encode'\" to \"choice == 'encode'\"",
-        "message-id": "C0113"
+        "message-id": "C0117"
     }
 ]