diff --git a/.travis.yml b/.travis.yml
index d776ab5..182495c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -21,6 +21,14 @@ env:
     - RACKET_VERSION=7.0
     - RACKET_VERSION=7.1
     - RACKET_VERSION=7.2
+    - RACKET_VERSION=7.3
+    - RACKET_VERSION=7.4
+    - RACKET_VERSION=7.5
+    - RACKET_VERSION=7.6
+    - RACKET_VERSION=7.7
+    - RACKET_VERSION=7.8
+    - RACKET_VERSION=7.9
+    - RACKET_VERSION=8.0
     - RACKET_VERSION=HEAD
 
 before_install:
@@ -36,4 +44,4 @@ script:
 - raco doc-coverage "$(basename "$TRAVIS_BUILD_DIR")"
 - raco cover -s main -s test -s doc -f codecov -f html -d ~/coverage . || true
 # TODO: add an option to cover to run the "outer" module too, not just the submodules.
-# TODO: deploy the coverage info.
\ No newline at end of file
+# TODO: deploy the coverage info.