diff --git a/rdflib/term.py b/rdflib/term.py
index 3e397674..4e0cfcf1 100644
--- a/rdflib/term.py
+++ b/rdflib/term.py
@@ -23,6 +23,7 @@ underlying Graph:
 
 from __future__ import annotations
 
+import sys
 import abc
 import re
 from fractions import Fraction
@@ -483,7 +484,12 @@ class BNode(IdentifiedNode):
                 else:
                     node_id = sn_result
             else:
-                node_id = uuid4().hex
+                # Do not generate random id for doc, this will help with reproducible
+                # builds https://github.com/RDFLib/rdflib/issues/2645
+                if "sphinx-build" in sys.argv[0]:
+                    node_id = "NODEID"
+                else:
+                    node_id = uuid4().hex
             # note, for two (and only two) string variables,
             # concat with + is faster than f"{x}{y}"
             value = _prefix + f"{node_id}"