diff --git a/scripts/eslint.sh b/scripts/eslint.sh
index 870117300..8f58ecf0a 100755
--- a/scripts/eslint.sh
+++ b/scripts/eslint.sh
@@ -16,16 +16,16 @@ cd "$ROOT_DIR/xplat/sonar"
 # When running in Sandcastle or devservers, the module install will fail
 # because we can't reach the internet. Setting the fwdproxy is dangerous, so
 # the next best thing is to install the modules with `--ignore-scripts`.
-# However, we can't run `install-node-modules.sh` like this all of the time.
-# `install-node-modules.sh` uses its args as keys for the "yarn watchman check"
-# cache. So if we run `install-node-modules.sh` outside of this script without
+# However, we can't run `install-node-modules` like this all of the time.
+# `install-node-modules` uses its args as keys for the "yarn watchman check"
+# cache. So if we run `install-node-modules` outside of this script without
 # the flag, but then this script runs it with the flag, we're going to
 # invalidate the cache.
 
 # If `node_modules` exists, we can't tell if it was created with
 # `--ignore-scripts` or not, so we play it safe, and avoid touching it.
 if [[ ! -d "node_modules" ]]; then
-  "$ROOT_DIR/xplat/third-party/yarn/install-node-modules.sh" --ignore-scripts --ignore-engines
+  "$ROOT_DIR/xplat/third-party/yarn/install-node-modules" --ignore-scripts --ignore-engines
 fi
 
 exec \
diff --git a/scripts/flow.sh b/scripts/flow.sh
index eeb5c9195..f93515286 100755
--- a/scripts/flow.sh
+++ b/scripts/flow.sh
@@ -16,16 +16,16 @@ cd "$ROOT_DIR/xplat/sonar"
 # When running in Sandcastle or devservers, the module install will fail
 # because we can't reach the internet. Setting the fwdproxy is dangerous, so
 # the next best thing is to install the modules with `--ignore-scripts`.
-# However, we can't run `install-node-modules.sh` like this all of the time.
-# `install-node-modules.sh` uses its args as keys for the "yarn watchman check"
-# cache. So if we run `install-node-modules.sh` outside of this script without
+# However, we can't run `install-node-modules` like this all of the time.
+# `install-node-modules` uses its args as keys for the "yarn watchman check"
+# cache. So if we run `install-node-modules` outside of this script without
 # the flag, but then this script runs it with the flag, we're going to
 # invalidate the cache.
 
 # If `node_modules` exists, we can't tell if it was created with
 # `--ignore-scripts` or not, so we play it safe, and avoid touching it.
 if [[ ! -d "node_modules" ]]; then
-  "$ROOT_DIR/xplat/third-party/yarn/install-node-modules.sh" --ignore-scripts --ignore-engines
+  "$ROOT_DIR/xplat/third-party/yarn/install-node-modules" --ignore-scripts --ignore-engines
 fi
 
 # Prefer the internal version of Flow, which should be in the PATH - but