diff --git a/requirements.txt b/requirements.txt
index 6b61dbb..0f37afc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-boltons>=20.2.1
+boltons>=23.1.1
 bs4>=0.0.1
 dask[bag]>=2.14.0
 deepdiff>=6.2.3
diff --git a/setup.py b/setup.py
index 6b9f337..2d6c02e 100644
--- a/setup.py
+++ b/setup.py
@@ -11,7 +11,7 @@
     url='https://github.com/NCAR/wrf_hydro_py',
     license='MIT',
     install_requires=[
-        'boltons>=20.2.1',
+        'boltons>=23.1.1',
         'bs4>=0.0.1',
         'dask[bag]>=2.14.0',
         'deepdiff>=6.2.3',
diff --git a/whp_test_env.yml b/whp_test_env.yml
index cd4c13b..26d5f84 100644
--- a/whp_test_env.yml
+++ b/whp_test_env.yml
@@ -3,7 +3,7 @@ channels:
   - conda-forge
   - nodefaults
 dependencies:
-  - boltons>=20.2.1
+  - boltons>=23.1.1
   - bs4>=0.0.1
   - dask[bag]>=2.14.0
   - deepdiff==6.3.0