diff --git a/source/bson-corpus/bson-corpus.rst b/source/bson-corpus/bson-corpus.rst
index 8205720cb9..68240b02a2 100644
--- a/source/bson-corpus/bson-corpus.rst
+++ b/source/bson-corpus/bson-corpus.rst
@@ -491,6 +491,8 @@ assertions.  This makes for easier and safer test case development.
 Changelog
 =========
 
+:2023-06-14: Add decimal128 Extended JSON parse tests for clamped zeros with
+             very large exponents.
 :2022-10-05: Remove spec front matter and reformat changelog.
 :2021-09-09: Clarify error expectation rules for ``parseErrors``.
 :2021-09-02: Add spec and prose tests for prohibiting null bytes in
diff --git a/source/bson-corpus/tests/decimal128-1.json b/source/bson-corpus/tests/decimal128-1.json
index 7eefec6bf7..8e7fbc93c6 100644
--- a/source/bson-corpus/tests/decimal128-1.json
+++ b/source/bson-corpus/tests/decimal128-1.json
@@ -312,6 +312,30 @@
            "canonical_bson": "18000000136400000000000a5bc138938d44c64d31cc3700",
            "degenerate_extjson": "{\"d\" : {\"$numberDecimal\" : \"1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000\"}}",
            "canonical_extjson": "{\"d\" : {\"$numberDecimal\" : \"1.000000000000000000000000000000000E+999\"}}"
+        },
+        {
+            "description": "Clamped zeros with a large positive exponent",
+            "canonical_bson": "180000001364000000000000000000000000000000FE5F00",
+            "degenerate_extjson": "{\"d\" : {\"$numberDecimal\" : \"0E+2147483647\"}}",
+            "canonical_extjson": "{\"d\" : {\"$numberDecimal\" : \"0E+6111\"}}"
+        },
+        {
+            "description": "Clamped zeros with a large negative exponent",
+            "canonical_bson": "180000001364000000000000000000000000000000000000",
+            "degenerate_extjson": "{\"d\" : {\"$numberDecimal\" : \"0E-2147483647\"}}",
+            "canonical_extjson": "{\"d\" : {\"$numberDecimal\" : \"0E-6176\"}}"
+        },
+        {
+            "description": "Clamped negative zeros with a large positive exponent",
+            "canonical_bson": "180000001364000000000000000000000000000000FEDF00",
+            "degenerate_extjson": "{\"d\" : {\"$numberDecimal\" : \"-0E+2147483647\"}}",
+            "canonical_extjson": "{\"d\" : {\"$numberDecimal\" : \"-0E+6111\"}}"
+        },
+        {
+            "description": "Clamped negative zeros with a large negative exponent",
+            "canonical_bson": "180000001364000000000000000000000000000000008000",
+            "degenerate_extjson": "{\"d\" : {\"$numberDecimal\" : \"-0E-2147483647\"}}",
+            "canonical_extjson": "{\"d\" : {\"$numberDecimal\" : \"-0E-6176\"}}"
         }
     ]
 }