diff --git a/.travis.yml b/.travis.yml
index eda35aa..66b5b2b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -37,12 +37,11 @@ install:
   - psql -c "CREATE USER esqutest WITH PASSWORD 'esqutest';" -U postgres
   - createdb -O esqutest esqutest
   - mysql -e 'CREATE DATABASE esqutest;'
+  - stack setup
 
 script:
-  - stack setup
-  - stack update
-  - stack build
-  - stack test
+  - stack build --fast $(if [[ $GHCVER == "nightly" ]]; then echo "--resolver nightly"; fi)
+  - stack test --fast $(if [[ $GHCVER == "nightly" ]]; then echo "--resolver nightly"; fi)
   - cd test/expected-compile-failures/
   - bash test.sh
 
diff --git a/stack-nightly.yaml b/stack-nightly.yaml
index 8785ae5..1c9d77f 100644
--- a/stack-nightly.yaml
+++ b/stack-nightly.yaml
@@ -1,4 +1,4 @@
-resolver: nightly-2020-01-24
+resolver: nightly-2020-09-20
 packages:
   - '.'
   - 'examples'