diff --git a/ci-test.sh b/ci-test.sh
index 02cd44a..b869a42 100644
--- a/ci-test.sh
+++ b/ci-test.sh
@@ -4,7 +4,7 @@ set -euo pipefail
 DEFAULTFLAGS="-Zrandomize-layout -Zmiri-strict-provenance"
 
 # make sure we keep using the current toolchain even in subdirs that have a toolchain file
-export RUSTUP_TOOLCHAIN=$(rustup show active-toolchain | cut -f 1 -d' ')
+export RUSTUP_TOOLCHAIN=$(rustup show active-toolchain | head -n1 | cut -f 1 -d' ')
 
 # apply our patch
 rm -rf rust-src-patched
diff --git a/rust-version b/rust-version
index fb1bd86..44b3e69 100644
--- a/rust-version
+++ b/rust-version
@@ -1 +1 @@
-nightly-2025-03-01
+nightly-2025-03-03