diff --git a/Gemfile b/Gemfile
index 7f2eca03b3..c5c610b884 100644
--- a/Gemfile
+++ b/Gemfile
@@ -22,6 +22,7 @@ group :development do
   gem "rubocop", "~> 1.64"
   gem "simplecov", require: false
   gem "syntax_tree", ">= 6.1.1", "< 7"
+  gem "rbi", github: "Shopify/rbi", branch: "vs-bump-prism-requirement"
 
   platforms :ruby do # C Ruby (MRI), Rubinius or TruffleRuby, but NOT Windows
     # sorbet-static is not available on Windows. We also skip Tapioca since it depends on sorbet-static-and-runtime
diff --git a/Gemfile.lock b/Gemfile.lock
index 4b5c0778aa..80e0cc5993 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,3 +1,12 @@
+GIT
+  remote: https://github.com/Shopify/rbi.git
+  revision: 24d85bee0e3664565ad66d14b3987bb3ca960e9b
+  branch: vs-bump-prism-requirement
+  specs:
+    rbi (0.1.14)
+      prism (>= 1.0.0, < 2.0.0)
+      sorbet-runtime (>= 0.5.9204)
+
 GIT
   remote: https://github.com/Shopify/rdoc.git
   revision: 92a6b4fcf8b72dd6776c9aa6714abe6f90d4a99e
@@ -11,7 +20,7 @@ PATH
   specs:
     ruby-lsp (0.17.17)
       language_server-protocol (~> 3.17.0)
-      prism (>= 0.29.0, < 0.31)
+      prism (>= 1.0.0, < 2.0.0)
       rbs (>= 3, < 4)
       sorbet-runtime (>= 0.5.10782)
 
@@ -47,15 +56,12 @@ GEM
       ast (~> 2.4.1)
       racc
     prettier_print (1.2.1)
-    prism (0.30.0)
+    prism (1.0.0)
     psych (5.1.2)
       stringio
     racc (1.8.0)
     rainbow (3.1.1)
     rake (13.2.1)
-    rbi (0.1.13)
-      prism (>= 0.18.0, < 1.0.0)
-      sorbet-runtime (>= 0.5.9204)
     rbs (3.5.1)
       logger
     regexp_parser (2.9.2)
@@ -143,6 +149,7 @@ DEPENDENCIES
   mocha (~> 2.3)
   psych (~> 5.1)
   rake (~> 13.2)
+  rbi!
   rdoc!
   rubocop (~> 1.64)
   rubocop-md (~> 1.2.0)
diff --git a/ruby-lsp.gemspec b/ruby-lsp.gemspec
index f746380152..dbc15e1f16 100644
--- a/ruby-lsp.gemspec
+++ b/ruby-lsp.gemspec
@@ -19,7 +19,7 @@ Gem::Specification.new do |s|
   s.require_paths = ["lib"]
 
   s.add_dependency("language_server-protocol", "~> 3.17.0")
-  s.add_dependency("prism", ">= 0.29.0", "< 0.31")
+  s.add_dependency("prism", ">= 1.0.0", "< 2.0.0")
   s.add_dependency("rbs", ">= 3", "< 4")
   s.add_dependency("sorbet-runtime", ">= 0.5.10782")
 
diff --git a/test/requests/show_syntax_tree_test.rb b/test/requests/show_syntax_tree_test.rb
index cbf0d902c0..9e77bcd8c7 100644
--- a/test/requests/show_syntax_tree_test.rb
+++ b/test/requests/show_syntax_tree_test.rb
@@ -14,12 +14,14 @@ def test_returns_partial_tree_if_document_has_syntax_error
 
       assert_equal(<<~AST, server.pop_response.response[:ast])
         @ ProgramNode (location: (1,0)-(1,6))
+        ├── flags: ∅
         ├── locals: []
         └── statements:
             @ StatementsNode (location: (1,0)-(1,6))
+            ├── flags: ∅
             └── body: (length: 1)
                 └── @ CallNode (location: (1,0)-(1,6))
-                    ├── flags: ignore_visibility
+                    ├── flags: newline, ignore_visibility
                     ├── receiver: ∅
                     ├── call_operator_loc: ∅
                     ├── name: :foo
@@ -29,12 +31,15 @@ def test_returns_partial_tree_if_document_has_syntax_error
                     ├── closing_loc: ∅
                     └── block:
                         @ BlockNode (location: (1,4)-(1,6))
+                        ├── flags: ∅
                         ├── locals: []
                         ├── parameters: ∅
                         ├── body:
                         │   @ StatementsNode (location: (1,4)-(1,6))
+                        │   ├── flags: ∅
                         │   └── body: (length: 1)
                         │       └── @ MissingNode (location: (1,4)-(1,6))
+                        │           └── flags: newline
                         ├── opening_loc: (1,4)-(1,6) = "do"
                         └── closing_loc: (1,6)-(1,6) = ""
       AST
@@ -51,17 +56,20 @@ def test_returns_ast_if_document_is_parsed
 
       assert_equal(<<~AST, server.pop_response.response[:ast])
         @ ProgramNode (location: (1,0)-(1,9))
+        ├── flags: ∅
         ├── locals: [:foo]
         └── statements:
             @ StatementsNode (location: (1,0)-(1,9))
+            ├── flags: ∅
             └── body: (length: 1)
                 └── @ LocalVariableWriteNode (location: (1,0)-(1,9))
+                    ├── flags: newline
                     ├── name: :foo
                     ├── depth: 0
                     ├── name_loc: (1,0)-(1,3) = "foo"
                     ├── value:
                     │   @ IntegerNode (location: (1,6)-(1,9))
-                    │   ├── flags: decimal
+                    │   ├── flags: static_literal, decimal
                     │   └── value: 123
                     └── operator_loc: (1,4)-(1,5) = "="
       AST
@@ -87,22 +95,24 @@ def test_returns_ast_for_a_selection
 
       assert_equal(<<~AST, server.pop_response.response[:ast])
         @ LocalVariableWriteNode (location: (1,0)-(1,9))
+        ├── flags: newline
         ├── name: :foo
         ├── depth: 0
         ├── name_loc: (1,0)-(1,3) = "foo"
         ├── value:
         │   @ IntegerNode (location: (1,6)-(1,9))
-        │   ├── flags: decimal
+        │   ├── flags: static_literal, decimal
         │   └── value: 123
         └── operator_loc: (1,4)-(1,5) = "="
 
         @ LocalVariableWriteNode (location: (2,0)-(2,9))
+        ├── flags: newline
         ├── name: :bar
         ├── depth: 0
         ├── name_loc: (2,0)-(2,3) = "bar"
         ├── value:
         │   @ IntegerNode (location: (2,6)-(2,9))
-        │   ├── flags: decimal
+        │   ├── flags: static_literal, decimal
         │   └── value: 456
         └── operator_loc: (2,4)-(2,5) = "="
       AST