diff --git a/requirements.txt b/requirements.txt
index 7d73be8..1e7475d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,9 +21,9 @@
 # `~=x.0`.
 
 absl-py>=1.0,==1.*
-attrs~=21.4
+attrs>=21.4
 dm-tree==0.1.8
-dp-accounting==0.4.2
+dp-accounting==0.4.3
 immutabledict~=2.2
 matplotlib~=3.3
 mpmath~=1.2
diff --git a/setup.py b/setup.py
index 376e345..4928c8c 100644
--- a/setup.py
+++ b/setup.py
@@ -28,9 +28,9 @@ setup(
     license='Apache-2.0',
     install_requires=[
         'absl-py>=1.0,==1.*',
-        'attrs~=21.4',
+        'attrs>=21.4',
         'dm-tree==0.1.8',
-        'dp-accounting==0.4.2',
+        'dp-accounting==0.4.3',
         'immutabledict~=2.2',
         'matplotlib~=3.3',
         'numpy~=1.21',