diff --git a/docs/reference/ImageMath.rst b/docs/reference/ImageMath.rst
index a72ca92d049..e934fb1378a 100644
--- a/docs/reference/ImageMath.rst
+++ b/docs/reference/ImageMath.rst
@@ -31,20 +31,21 @@ Example: Using the :py:mod:`~PIL.ImageMath` module
               b=im2
             )
 
-.. py:function:: lambda_eval(expression, options)
+.. py:function:: lambda_eval(expression, options, **kw)
 
     Returns the result of an image function.
 
     :param expression: A function that receives a dictionary.
     :param options: Values to add to the function's dictionary, mapping image
-                    names to Image instances. Deprecated.
+                    names to Image instances. Note that the names must be
+                    valid Python identifiers. Deprecated.
                     You can instead use one or more keyword arguments, as
-                    shown in the above example. Note that the names must be
-                    valid Python identifiers.
+                    shown in the above example.
+    :param **kw: Values to add to the function's dictionary.
     :return: An image, an integer value, a floating point value,
              or a pixel tuple, depending on the expression.
 
-.. py:function:: unsafe_eval(expression, options)
+.. py:function:: unsafe_eval(expression, options, **kw)
 
     Evaluates an image expression.
 
@@ -61,11 +62,12 @@ Example: Using the :py:mod:`~PIL.ImageMath` module
     :param expression: A string which uses the standard Python expression
                        syntax. In addition to the standard operators, you can
                        also use the functions described below.
-    :param options: Values to add to the function's dictionary, mapping image
-                    names to Image instances. Deprecated.
+    :param options: Values to add to the evaluation context, mapping image
+                    names to Image instances. Note that the names must be
+                    valid Python identifiers. Deprecated.
                     You can instead use one or more keyword arguments, as
-                    shown in the above example. Note that the names must be
-                    valid Python identifiers.
+                    shown in the above example.
+    :param **kw: Values to add to the evaluation context.
     :return: An image, an integer value, a floating point value,
              or a pixel tuple, depending on the expression.
 
diff --git a/src/PIL/ImageMath.py b/src/PIL/ImageMath.py
index e79eb3ec9b5..191cc2a5f88 100644
--- a/src/PIL/ImageMath.py
+++ b/src/PIL/ImageMath.py
@@ -251,6 +251,7 @@ def lambda_eval(
     :param expression: A function that receives a dictionary.
     :param options: Values to add to the function's dictionary. Deprecated.
                     You can instead use one or more keyword arguments.
+    :param **kw: Values to add to the function's dictionary.
     :return: The expression result. This is usually an image object, but can
              also be an integer, a floating point value, or a pixel tuple,
              depending on the expression.
@@ -295,6 +296,7 @@ def unsafe_eval(
     :param expression: A string containing a Python-style expression.
     :param options: Values to add to the evaluation context. Deprecated.
                     You can instead use one or more keyword arguments.
+    :param **kw: Values to add to the evaluation context.
     :return: The evaluated expression. This is usually an image object, but can
              also be an integer, a floating point value, or a pixel tuple,
              depending on the expression.