diff --git a/Gemfile b/Gemfile
index 1ddda970dc..c699b8b942 100644
--- a/Gemfile
+++ b/Gemfile
@@ -150,7 +150,7 @@ end
 platforms :rbx do
   # The rubysl-yaml gem doesn't ship with Psych by default as it needs
   # libyaml that isn't always available.
-  gem "psych", "~> 2.0"
+  gem "psych", "~> 3.0"
 end
 
 # Gems that are necessary for Active Record tests with Oracle.
diff --git a/Gemfile.lock b/Gemfile.lock
index 5c93085395..58d751c4c3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -340,7 +340,7 @@ GEM
     pg (1.0.0-x64-mingw32)
     pg (1.0.0-x86-mingw32)
     powerpack (0.1.1)
-    psych (2.2.4)
+    psych (3.0.2)
     public_suffix (3.0.1)
     puma (3.9.1)
     puma (3.9.1-java)
@@ -525,7 +525,7 @@ DEPENDENCIES
   mysql2 (>= 0.4.10)
   nokogiri (>= 1.8.1)
   pg (>= 0.18.0)
-  psych (~> 2.0)
+  psych (~> 3.0)
   puma
   que
   queue_classic!