diff --git a/Gemfile.lock b/Gemfile.lock
index 72216f7db..ab75c7134 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,7 +2,7 @@ PATH
   remote: .
   specs:
     xdrgen (0.1.0)
-      activesupport (>= 5.0.0, < 7.0)
+      activesupport (>= 5.0.0, < 8.0)
       memoist (~> 0.11)
       slop (>= 3.4.0, < 5.0)
       treetop (~> 1.5)
@@ -10,7 +10,7 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (6.1.4)
+    activesupport (6.1.7.3)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 1.6, < 2)
       minitest (>= 5.1)
@@ -21,7 +21,7 @@ GEM
       bundler (>= 1.2.0, < 3)
       thor (~> 1.0)
     coderay (1.1.3)
-    concurrent-ruby (1.1.9)
+    concurrent-ruby (1.2.2)
     diff-lcs (1.4.4)
     ffi (1.15.3)
     formatador (0.3.0)
@@ -39,7 +39,7 @@ GEM
       guard (~> 2.1)
       guard-compat (~> 1.1)
       rspec (>= 2.99.0, < 4.0)
-    i18n (1.8.10)
+    i18n (1.12.0)
       concurrent-ruby (~> 1.0)
     listen (3.5.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
@@ -47,7 +47,7 @@ GEM
     lumberjack (1.2.8)
     memoist (0.16.2)
     method_source (1.0.0)
-    minitest (5.14.4)
+    minitest (5.15.0)
     nenv (0.3.0)
     notiffany (0.1.3)
       nenv (~> 0.1)
@@ -105,10 +105,10 @@ GEM
     thor (1.1.0)
     treetop (1.6.11)
       polyglot (~> 0.3)
-    tzinfo (2.0.4)
+    tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     unicode-display_width (2.0.0)
-    zeitwerk (2.4.2)
+    zeitwerk (2.6.7)
 
 PLATFORMS
   ruby
diff --git a/xdrgen.gemspec b/xdrgen.gemspec
index 31362c7c1..5acaca85c 100644
--- a/xdrgen.gemspec
+++ b/xdrgen.gemspec
@@ -18,7 +18,7 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = ">= 2.5.0"
 
-  spec.add_dependency "activesupport", ">= 5.0.0", "< 7.0"
+  spec.add_dependency "activesupport", ">= 5.0.0", "< 8.0"
   spec.add_dependency "memoist", "~> 0.11"
   spec.add_dependency "slop", ">= 3.4.0", "< 5.0"
   spec.add_dependency "treetop", "~> 1.5"