diff --git a/CHANGES.rst b/CHANGES.rst
index 3891b6ba..cada852f 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -25,6 +25,10 @@ Other
   options to ``DarkModel`` and ``MIRIDarkModel``. Add the array extension
   to the ``RampModel``, for tracking the average dark current. [#265]
 
+- Add ``EXTRXSTR``, ``EXTRXSTP``, ``EXTRYSTR``, and ``EXTRYSTP`` keywords
+  to the jwst ``MultiSpec`` schema. [#264]
+
+
 1.9.1 (2024-01-25)
 ==================
 
diff --git a/src/stdatamodels/jwst/datamodels/schemas/multispec.schema.yaml b/src/stdatamodels/jwst/datamodels/schemas/multispec.schema.yaml
index 733e1d9a..b8904788 100644
--- a/src/stdatamodels/jwst/datamodels/schemas/multispec.schema.yaml
+++ b/src/stdatamodels/jwst/datamodels/schemas/multispec.schema.yaml
@@ -84,6 +84,26 @@ allOf:
             type: number
             fits_keyword: EXTR_Y
             fits_hdu: EXTRACT1D
+          extraction_xstart:
+            title: X axis start of extraction region
+            type: number
+            fits_keyword: EXTRXSTR
+            fits_hdu: EXTRACT1D
+          extraction_xstop:
+            title: X axis end of extraction region
+            type: number
+            fits_keyword: EXTRXSTP
+            fits_hdu: EXTRACT1D
+          extraction_ystart:
+            title: Y axis start of extraction region
+            type: number
+            fits_keyword: EXTRYSTR
+            fits_hdu: EXTRACT1D
+          extraction_ystop:
+            title: Y axis end of extraction region
+            type: number
+            fits_keyword: EXTRYSTP
+            fits_hdu: EXTRACT1D
           shutter_state:
             title: All (open and close) shutters in a slit
             type: string