diff --git a/requirements-test.txt b/requirements-test.txt
index 8dcd4cda..022609b0 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -39,7 +39,7 @@ booleanoperations==0.9.0
     #   afdko
     #   fontparts
     #   ufo2ft
-brotli==1.1.0
+brotli==1.2.1
     # via
     #   fonttools
     #   gftools
diff --git a/requirements.txt b/requirements.txt
index 7c1e2e6a..00dfa00e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -43,7 +43,7 @@ booleanoperations==0.10.0
     #   afdko
     #   fontparts
     #   ufo2ft
-brotli==1.2.0
+brotli==1.2.1
     # via
     #   fonttools
     #   gftools