Obtained from:	https://github.com/Shopify/ruby-lsp/pull/1953

--- lib/ruby_indexer/lib/ruby_indexer/collector.rb.orig	2024-04-20 14:51:21 UTC
+++ lib/ruby_indexer/lib/ruby_indexer/collector.rb
@@ -7,7 +7,7 @@ module RubyIndexer
 
     LEAVE_EVENT = T.let(Object.new.freeze, Object)
 
-    sig { params(index: Index, parse_result: Prism::ParseResult, file_path: String).void }
+    sig { params(index: Index, parse_result: Prism::ParseResult[Prism::ProgramNode], file_path: String).void }
     def initialize(index, parse_result, file_path)
       @index = index
       @file_path = file_path
--- lib/ruby_lsp/document.rb.orig	2024-04-20 14:51:21 UTC
+++ lib/ruby_lsp/document.rb
@@ -8,7 +8,7 @@ module RubyLsp
 
     abstract!
 
-    sig { returns(Prism::ParseResult) }
+    sig { returns(Prism::ParseResult[Prism::ProgramNode]) }
     attr_reader :parse_result
 
     sig { returns(String) }
@@ -31,7 +31,7 @@ module RubyLsp
       @version = T.let(version, Integer)
       @uri = T.let(uri, URI::Generic)
       @needs_parsing = T.let(true, T::Boolean)
-      @parse_result = T.let(parse, Prism::ParseResult)
+      @parse_result = T.let(parse, Prism::ParseResult[Prism::ProgramNode])
     end
 
     sig { returns(Prism::ProgramNode) }
@@ -93,7 +93,7 @@ module RubyLsp
       @cache.clear
     end
 
-    sig { abstract.returns(Prism::ParseResult) }
+    sig { abstract.returns(Prism::ParseResult[Prism::ProgramNode]) }
     def parse; end
 
     sig { returns(T::Boolean) }
--- lib/ruby_lsp/internal.rb.orig	2024-04-20 14:51:21 UTC
+++ lib/ruby_lsp/internal.rb
@@ -19,6 +19,14 @@ require "language_server-protocol"
 require "prism/visitor"
 require "language_server-protocol"
 
+# Prism v0.26.0 introduced generics for ParseResult, but it causes some problems so the intention is to remove it.
+# Once that is done, we can remove this patch.
+module Prism
+  class ParseResult
+    extend T::Generic
+  end
+end
+
 require "ruby-lsp"
 require "ruby_lsp/base_server"
 require "ruby_indexer/ruby_indexer"
--- lib/ruby_lsp/listeners/document_link.rb.orig	2024-04-20 14:51:21 UTC
+++ lib/ruby_lsp/listeners/document_link.rb
@@ -124,7 +124,7 @@ module RubyLsp
         match = comment.location.slice.match(%r{source://.*#\d+$})
         return unless match
 
-        uri = T.cast(URI(T.must(match[0])), URI::Source)
+        uri = T.cast(URI(match[0]), URI::Source)
         gem_version = resolve_version(uri)
         return if gem_version.nil?
 
--- lib/ruby_lsp/ruby_document.rb.orig	2024-04-20 14:51:21 UTC
+++ lib/ruby_lsp/ruby_document.rb
@@ -3,7 +3,7 @@ module RubyLsp
 
 module RubyLsp
   class RubyDocument < Document
-    sig { override.returns(Prism::ParseResult) }
+    sig { override.returns(Prism::ParseResult[Prism::ProgramNode]) }
     def parse
       return @parse_result unless @needs_parsing