diff --git a/package.yaml b/package.yaml
index 7bf5c40e..0302d2e6 100644
--- a/package.yaml
+++ b/package.yaml
@@ -8,12 +8,12 @@ default-extensions:
 
 
 dependencies:
-  - aeson == 1.4.*
+  - aeson == 1.5.*
   - base >= 4.7 && < 5
   - bytestring == 0.10.*
-  - cmark == 0.5.*
+  - cmark == 0.6.*
   - flow == 1.*
-  - protolude == 0.2.*
+  - protolude == 0.3.*
   - shikensu == 0.3.*
   - text == 1.*
   - time == 1.*
diff --git a/stack.yaml b/stack.yaml
index f80d7c94..588054c9 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,2 +1,5 @@
-resolver: lts-13.5
+resolver: nightly-2020-09-19
 recommend-stack-upgrade: false
+
+extra-deps:
+  - shikensu-0.3.11