diff --git a/Gemfile.lock b/Gemfile.lock
index 8547a5e07..a12c19c7c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -522,7 +522,8 @@ GEM
       css_parser (>= 1.6.0)
       htmlentities (>= 4.0.0)
     promise.rb (0.7.4)
-    psych (5.1.2)
+    psych (5.2.2)
+      date
       stringio
     public_suffix (2.0.5)
     pwqgen.rb (0.1.0)
@@ -594,7 +595,7 @@ GEM
     rdf-xsd (3.2.1)
       rdf (~> 3.2)
       rexml (~> 3.2)
-    rdoc (6.6.2)
+    rdoc (6.6.3.1)
       psych (>= 4.0.0)
     reek (6.3.0)
       dry-schema (~> 1.13.0)
@@ -719,7 +720,7 @@ GEM
       rack (> 1, < 3)
     string_pattern (2.3.0)
       regexp_parser (~> 2.5, >= 2.5.0)
-    stringio (3.1.0)
+    stringio (3.1.2)
     strip_attributes (1.13.0)
       activemodel (>= 3.0, < 8.0)
     sxp (1.2.3)