diff --git a/open_spiel/python/algorithms/alpha_zero/model.py b/open_spiel/python/algorithms/alpha_zero/model.py
index 4629bc20d6..3c84c33c07 100644
--- a/open_spiel/python/algorithms/alpha_zero/model.py
+++ b/open_spiel/python/algorithms/alpha_zero/model.py
@@ -18,11 +18,19 @@
 import functools
 import os
 from typing import Sequence
+import warnings
 
 import numpy as np
 import tensorflow.compat.v1 as tf
 
 
+warnings.warn(
+    "Python AlphaZero has known issues when using Keras 3 and may be "
+    "removed in a future version unless fixed. See OpenSpiel github "
+    "issue #1206 for details."
+)
+
+
 def cascade(x, fns):
   for fn in fns:
     x = fn(x)
diff --git a/open_spiel/python/algorithms/deep_cfr_tf2.py b/open_spiel/python/algorithms/deep_cfr_tf2.py
index 2901822bc6..f085511670 100644
--- a/open_spiel/python/algorithms/deep_cfr_tf2.py
+++ b/open_spiel/python/algorithms/deep_cfr_tf2.py
@@ -32,6 +32,8 @@
 import contextlib
 import os
 import random
+import warnings
+
 import numpy as np
 import tensorflow as tf
 
@@ -39,6 +41,13 @@
 import pyspiel
 
 
+warnings.warn(
+    'Deep CFR TF2 has known issues when using Keras 3 and may be removed '
+    'in a future version unless fixed. See OpenSpiel github issue #1208 '
+    'for details.'
+)
+
+
 # The size of the shuffle buffer used to reshuffle part of the data each
 # epoch within one training iteration
 ADVANTAGE_TRAIN_SHUFFLE_SIZE = 100000
diff --git a/open_spiel/python/algorithms/rcfr.py b/open_spiel/python/algorithms/rcfr.py
index b427c54aec..9bae781af6 100644
--- a/open_spiel/python/algorithms/rcfr.py
+++ b/open_spiel/python/algorithms/rcfr.py
@@ -37,13 +37,23 @@
     At Advances in Neural Information Processing Systems 20 (NeurIPS). 2007.
 """
 
+import warnings
+
 import numpy as np
 import tensorflow.compat.v1 as tf
 
+
 # Temporarily disable TF2 behavior while the code is not updated.
 tf.disable_v2_behavior()
 
 
+warnings.warn(
+    "RCFR has known issues when using Keras 3 and may be removed in a "
+    "future version unless fixed. See OpenSpiel github issue #1207 for "
+    "details."
+)
+
+
 def tensor_to_matrix(tensor):
   """Converts `tensor` to a matrix (a rank-2 tensor) or raises an exception.