diff --git a/requirements.txt b/requirements.txt
index 5326c1a..3cf27d6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -146,7 +146,7 @@ transitions==0.8.4
 typed-ast==1.4.1
 typing==3.7.4.3
 typing-extensions==3.7.4.3
-tzlocal==1.5.1
+tzlocal==4.2
 unicodecsv==0.14.1
 urllib3==1.25.10
 waitress==1.4.4
diff --git a/requirements_all.txt b/requirements_all.txt
index 84729cd..3555fae 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -143,7 +143,7 @@ transitions==0.8.4
 typed-ast==1.4.1
 typing==3.7.4.3
 typing-extensions==3.7.4.3
-tzlocal==1.5.1
+tzlocal==4.2
 unicodecsv==0.14.1
 urllib3==1.25.10
 waitress==1.4.4