diff --git a/ci/docker-run.sh b/ci/docker-run.sh
index 94faf48232acc0..ac544f2cdf4f33 100755
--- a/ci/docker-run.sh
+++ b/ci/docker-run.sh
@@ -78,7 +78,9 @@ ARGS+=(
 # Also propagate environment variables needed for codecov
 # https://docs.codecov.io/docs/testing-with-docker#section-codecov-inside-docker
 # We normalize CI to `1`; but codecov expects it to be `true` to detect Buildkite...
-CODECOV_ENVS=$(CI=true bash <(curl -s https://codecov.io/env))
+# Unfortunately, codecov.io fails sometimes:
+#   curl: (7) Failed to connect to codecov.io port 443: Connection timed out
+CODECOV_ENVS=$(CI=true bash <(while ! curl -sS --retry 5 --retry-delay 2 --retry-connrefused https://codecov.io/env; do sleep 10; done))
 
 if $INTERACTIVE; then
   if [[ -n $1 ]]; then
diff --git a/ci/test-coverage.sh b/ci/test-coverage.sh
index 57695060a264bd..d39835ab5de694 100755
--- a/ci/test-coverage.sh
+++ b/ci/test-coverage.sh
@@ -42,7 +42,9 @@ if [[ -z "$CODECOV_TOKEN" ]]; then
   echo CODECOV_TOKEN undefined, codecov.io upload skipped
 else
   # We normalize CI to `1`; but codecov expects it to be `true` to detect Buildkite...
-  CI=true bash <(curl -s https://codecov.io/bash) -X gcov -f target/cov/lcov.info
+  # Unfortunately, codecov.io fails sometimes:
+  #   curl: (7) Failed to connect to codecov.io port 443: Connection timed out
+  CI=true bash <(while ! curl -sS --retry 5 --retry-delay 2 --retry-connrefused https://codecov.io/bash; do sleep 10; done) -Z -X gcov -f target/cov/lcov.info
 
   annotate --style success --context codecov.io \
     "CodeCov report: https://codecov.io/github/solana-labs/solana/commit/${CI_COMMIT:0:9}"