@@ -235,10 +235,12 @@
     )
 )
 
-tokenization_extra_require = ["sentencepiece >= 0.2.0"]
+# sentencepiece 0.2.3 ships protobuf 7.x generated code, which fails to import
+# with older protobuf runtimes (e.g. the protobuf <= 5.29.4 used in testing).
+tokenization_extra_require = ["sentencepiece >= 0.2.0, < 0.2.3"]
 tokenization_testing_extra_require = [
     # sentencepiece has no Python 3.15 wheels yet and fails to build from source.
-    "sentencepiece >= 0.2.0; python_version<'3.15'",
+    "sentencepiece >= 0.2.0, < 0.2.3; python_version<'3.15'",
     "nltk",
 ]
Original file line number	Diff line number	Diff line change
`@@ -235,10 +235,12 @@`
`235`	`235`	`)`
`236`	`236`	`)`
`237`	`237`
`238`		`-tokenization_extra_require = ["sentencepiece >= 0.2.0"]`
	`238`	`+# sentencepiece 0.2.3 ships protobuf 7.x generated code, which fails to import`
	`239`	`+# with older protobuf runtimes (e.g. the protobuf <= 5.29.4 used in testing).`
	`240`	`+tokenization_extra_require = ["sentencepiece >= 0.2.0, < 0.2.3"]`
`239`	`241`	`tokenization_testing_extra_require = [`
`240`	`242`	`# sentencepiece has no Python 3.15 wheels yet and fails to build from source.`
`241`		`- "sentencepiece >= 0.2.0; python_version<'3.15'",`
	`243`	`+ "sentencepiece >= 0.2.0, < 0.2.3; python_version<'3.15'",`
`242`	`244`	`"nltk",`
`243`	`245`	`]`
`244`	`246`