diff --git a/setup.py b/setup.py
index 11707cedb0..f989157df6 100644
--- a/setup.py
+++ b/setup.py
@@ -3,7 +3,7 @@
 extras_require = {
     'shellcomplete': ['click_completion'],
     'tensorflow': [
-        'tensorflow>=2.3.1',  # c.f. https://github.com/tensorflow/tensorflow/pull/40789
+        'tensorflow>=2.6.5',  # c.f. PR #1874
         'tensorflow-probability>=0.11.0',  # c.f. PR #1657
     ],
     'torch': ['torch>=1.10.0'],  # c.f. PR #1657
diff --git a/tests/constraints.txt b/tests/constraints.txt
index 8afbb29b53..02b54831b4 100644
--- a/tests/constraints.txt
+++ b/tests/constraints.txt
@@ -11,8 +11,7 @@ uproot==4.1.1
 # minuit
 iminuit==2.4.0
 # tensorflow
-tensorflow==2.3.1  # tensorflow-probability v0.11.0 requires tensorflow>=2.3
-protobuf<=3.20.1  # protobuf v4.21.0 breaks ABI compatability
+tensorflow==2.6.5  # c.f. PR #1874
 tensorflow-probability==0.11.0  # c.f. PR #1657
 # torch
 torch==1.10.0