diff --git a/lib/prism/translation/parser/rubocop.rb b/lib/prism/translation/parser/rubocop.rb
index e6fd8db2901d8e..91602d16eff9cc 100644
--- a/lib/prism/translation/parser/rubocop.rb
+++ b/lib/prism/translation/parser/rubocop.rb
@@ -1,6 +1,8 @@
 # frozen_string_literal: true
 # typed: ignore
 
+warn "WARN: Prism is directly supported since RuboCop 1.62. The `prism/translation/parser/rubocop` file is deprecated."
+
 require "parser"
 require "rubocop"
 
@@ -27,9 +29,13 @@ module ProcessedSource
           # list of known parsers.
           def parser_class(ruby_version)
             if ruby_version == Prism::Translation::Parser::VERSION_3_3
+              warn "WARN: Setting `TargetRubyVersion: 80_82_73_83_77.33` is deprecated. " \
+                   "Set to `ParserEngine: parser_prism` and `TargetRubyVersion: 3.3` instead."
               require "prism/translation/parser33"
               Prism::Translation::Parser33
             elsif ruby_version == Prism::Translation::Parser::VERSION_3_4
+              warn "WARN: Setting `TargetRubyVersion: 80_82_73_83_77.34` is deprecated. " \
+                   "Set to `ParserEngine: parser_prism` and `TargetRubyVersion: 3.4` instead."
               require "prism/translation/parser34"
               Prism::Translation::Parser34
             else
@@ -41,9 +47,13 @@ def parser_class(ruby_version)
           # list of known parsers.
           def parser_class(ruby_version, _parser_engine)
             if ruby_version == Prism::Translation::Parser::VERSION_3_3
+              warn "WARN: Setting `TargetRubyVersion: 80_82_73_83_77.33` is deprecated. " \
+                   "Set to `ParserEngine: parser_prism` and `TargetRubyVersion: 3.3` instead."
               require "prism/translation/parser33"
               Prism::Translation::Parser33
             elsif ruby_version == Prism::Translation::Parser::VERSION_3_4
+              warn "WARN: Setting `TargetRubyVersion: 80_82_73_83_77.34` is deprecated. " \
+                   "Set to `ParserEngine: parser_prism` and `TargetRubyVersion: 3.4` instead."
               require "prism/translation/parser34"
               Prism::Translation::Parser34
             else