diff --git a/bin/postinstall.sh b/bin/postinstall.sh
index 6c14877..ff4bca0 100755
--- a/bin/postinstall.sh
+++ b/bin/postinstall.sh
@@ -2,6 +2,6 @@
 
 # do not create stubs from missing libraries
 # ignore dev dependencies
-yarn flow-typed install --skip true --ignoreDeps dev
+yarn flow-typed install --skip true --ignoreDeps dev || true
 
-yarn build-only
+NODE_OPTIONS=--openssl-legacy-provider yarn build-only