diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 72587ba7e..4b335176c 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -35,6 +35,7 @@ jobs:
           - "3.4"
           - ruby-head
           - jruby-9.4
+          - jruby-10.0
         task:
           - internal_investigation
           - spec
diff --git a/Gemfile b/Gemfile
index 089cdf4e6..4153a197f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -13,5 +13,10 @@ gem 'rubocop-rake', '~> 0.7'
 gem 'simplecov', '>= 0.19'
 gem 'yard'
 
+# FIXME: Remove when prism v1.5.2 or v1.6.0 is released.
+if RUBY_VERSION < '3.0' || RUBY_ENGINE == 'jruby'
+  gem 'prism', '!= 1.5.0', '!= 1.5.1'
+end
+
 local_gemfile = 'Gemfile.local'
 eval_gemfile(local_gemfile) if File.exist?(local_gemfile)