diff --git a/lib/core/settings.py b/lib/core/settings.py
index 062d1c16c..1bfdee84f 100644
--- a/lib/core/settings.py
+++ b/lib/core/settings.py
@@ -18,7 +18,7 @@ from lib.core.enums import OS
 from thirdparty.six import unichr as _unichr
 
 # sqlmap version (<major>.<minor>.<month>.<monthly commit>)
-VERSION = "1.5.4.3"
+VERSION = "1.5.4.4"
 TYPE = "dev" if VERSION.count('.') > 2 and VERSION.split('.')[-1] != '0' else "stable"
 TYPE_COLORS = {"dev": 33, "stable": 90, "pip": 34}
 VERSION_STRING = "sqlmap/%s#%s" % ('.'.join(VERSION.split('.')[:-1]) if VERSION.count('.') > 2 and VERSION.split('.')[-1] == '0' else VERSION, TYPE)
diff --git a/lib/techniques/blind/inference.py b/lib/techniques/blind/inference.py
index 739d26533..db5ab61d2 100644
--- a/lib/techniques/blind/inference.py
+++ b/lib/techniques/blind/inference.py
@@ -504,6 +504,10 @@ def bisection(payload, expression, length=None, charsetType=None, firstChar=None
                         else:
                             break
 
+                        # NOTE: https://github.com/sqlmapproject/sqlmap/issues/4629
+                        if not isListLike(threadData.shared.value):
+                            break
+
                         with kb.locks.value:
                             threadData.shared.value[currentCharIndex - 1 - firstChar] = val
                             currentValue = list(threadData.shared.value)