diff --git a/tablite/config.py b/tablite/config.py
index ea16c587..100f75b7 100644
--- a/tablite/config.py
+++ b/tablite/config.py
@@ -36,7 +36,7 @@ class Config(object):
     multiprocessing is used.
     """
 
-    USE_NIMPORTER = os.environ.get("USE_NIMPORTER", "true").lower() in ["1","t","true","y","yes"]
+    USE_NIMPORTER = os.environ.get("USE_NIMPORTER", "false").lower() in ["1","t","true","y","yes"]
     ALLOW_CSV_READER_FALLTHROUGH = os.environ.get("ALLOW_CSV_READER_FALLTHROUGH", "true").lower() in ["1", "t", "true", "y", "yes"]
 
     NIM_SUPPORTED_CONV_TYPES = ["Windows-1252", "ISO-8859-1"]
diff --git a/tablite/version.py b/tablite/version.py
index 09f4aa56..b1e1552d 100644
--- a/tablite/version.py
+++ b/tablite/version.py
@@ -1,3 +1,3 @@
-major, minor, patch = 2023, 11, 5
+major, minor, patch = 2023, 11, 6
 __version_info__ = (major, minor, patch)
 __version__ = ".".join(str(i) for i in __version_info__)