diff --git a/src/secp256k1/.travis.yml b/src/secp256k1/.travis.yml
--- a/src/secp256k1/.travis.yml
+++ b/src/secp256k1/.travis.yml
@@ -19,13 +19,13 @@
   homebrew:
     packages:
       - cmake
-      - gcc@9
       - gmp
       - ninja
       - valgrind
     update: true
 install:
   - if [ "${TRAVIS_OS_NAME}" = "linux" ] && [ "${TRAVIS_CPU_ARCH}" = "amd64" ]; then ./travis/install_cmake.sh; fi
+  - if [ "${TRAVIS_OS_NAME}" = "osx" ]; then HOMEBREW_NO_AUTO_UPDATE=1 brew install gcc@9; fi
 cache:
   directories:
     - /opt/cmake
diff --git a/src/secp256k1/travis/build_cmake.sh b/src/secp256k1/travis/build_cmake.sh
--- a/src/secp256k1/travis/build_cmake.sh
+++ b/src/secp256k1/travis/build_cmake.sh
@@ -51,12 +51,4 @@
 
 ninja $CMAKE_TARGET
 
-if [ "$RUN_VALGRIND" = "yes" ]; then
-  # the `--error-exitcode` is required to make the test fail if valgrind found
-  # errors, otherwise it'll return 0
-  # (http://valgrind.org/docs/manual/manual-core.html)
-  valgrind --error-exitcode=42 ./secp256k1-tests 16
-  valgrind --error-exitcode=42 ./secp256k1-exhaustive_tests
-fi
-
 popd