diff --git a/Gemfile.lock b/Gemfile.lock
index a882f95..fab0994 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -22,8 +22,8 @@ GEM
       securerandom (>= 0.3)
       tzinfo (~> 2.0, >= 2.0.5)
       uri (>= 0.13.1)
-    addressable (2.8.7)
-      public_suffix (>= 2.0.2, < 7.0)
+    addressable (2.9.0)
+      public_suffix (>= 2.0.2, < 8.0)
     base64 (0.3.0)
     bibtex-ruby (6.2.0)
       latex-decode (~> 0.0)
@@ -58,7 +58,7 @@ GEM
       time (< 1.0)
     csl-styles (2.0.2)
       csl (~> 2.0)
-    css_parser (1.21.1)
+    css_parser (1.22.0)
       addressable
     cssminify2 (2.1.0)
     csv (3.3.5)
@@ -229,7 +229,7 @@ GEM
     ostruct (0.6.3)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (6.0.2)
+    public_suffix (7.0.5)
     racc (1.8.1)
     rake (13.3.1)
     rb-fsevent (0.11.2)