diff --git a/.travis.yml b/.travis.yml
index d8d932e81..6b54daa39 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,6 @@
 language: dart
 dart:
-  - "1.19.1"
+  - "1.21.1"
 with_content_shell: true
 before_install:
   - export DISPLAY=:99.0
diff --git a/pubspec.yaml b/pubspec.yaml
index a8f8c4da5..42d59f08c 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -5,7 +5,7 @@ homepage: https://github.com/Workiva/over_react/
 authors:
   - Workiva UI Platform Team <uip@workiva.com>
 environment:
-  sdk: ">=1.19.1"
+  sdk: ">=1.21.1"
 dependencies:
   analyzer: ">=0.26.1+3 <0.30.0"
   barback: "^0.15.0"
diff --git a/smithy.yaml b/smithy.yaml
index ac9b6981e..609bfa172 100644
--- a/smithy.yaml
+++ b/smithy.yaml
@@ -1,8 +1,8 @@
 project: dart
 language: dart
 
-# dart 1.19.1, built from https://github.com/Workiva/smithy-runner-dart/tree/0.0.4
-runner_image: drydock-prod.workiva.org/workiva/smithy-runner-dart:74173
+# dart 1.21.1, built from https://github.com/Workiva/smithy-runner-dart/tree/0.0.4
+runner_image: drydock-prod.workiva.net/workiva/smithy-runner-dart:119662
 
 script:
   - pub get