diff --git a/.dart_tool/package_config.json b/.dart_tool/package_config.json
index 3174dacc2a2..be8938e45da 100644
--- a/.dart_tool/package_config.json
+++ b/.dart_tool/package_config.json
@@ -250,7 +250,7 @@
       "name": "dev_compiler",
       "rootUri": "../pkg/dev_compiler",
       "packageUri": "lib/",
-      "languageVersion": "2.3"
+      "languageVersion": "2.12"
     },
     {
       "name": "devtools_shared",
@@ -806,4 +806,4 @@
       "languageVersion": "2.12"
     }
   ]
-}
+}
\ No newline at end of file
diff --git a/pkg/dev_compiler/pubspec.yaml b/pkg/dev_compiler/pubspec.yaml
index 89ca5859ff9..2c8bf7f23fc 100644
--- a/pkg/dev_compiler/pubspec.yaml
+++ b/pkg/dev_compiler/pubspec.yaml
@@ -3,7 +3,7 @@ name: dev_compiler
 publish_to: none
 
 environment:
-  sdk: '>=2.3.0 <3.0.0'
+  sdk: '>=2.12.0 <3.0.0'
 
 dependencies:
   _fe_analyzer_shared: