diff --git a/containers/Dockerfile.cross-aarch64-unknown-linux-gnu b/containers/Dockerfile.cross-aarch64-unknown-linux-gnu
index 0274699..f889fd5 100644
--- a/containers/Dockerfile.cross-aarch64-unknown-linux-gnu
+++ b/containers/Dockerfile.cross-aarch64-unknown-linux-gnu
@@ -14,6 +14,7 @@ RUN dpkg --add-architecture arm64 \
         g++-aarch64-linux-gnu \
         gnupg \
         libc6-dev-arm64-cross \
+        libstdc++6:arm64 \
         libzstd-dev \
         libzstd-dev:arm64 \
         lsb-release \
diff --git a/containers/Dockerfile.cross-riscv64gc-unknown-linux-gnu b/containers/Dockerfile.cross-riscv64gc-unknown-linux-gnu
index 0ae2fea..913ac98 100644
--- a/containers/Dockerfile.cross-riscv64gc-unknown-linux-gnu
+++ b/containers/Dockerfile.cross-riscv64gc-unknown-linux-gnu
@@ -23,6 +23,7 @@ RUN dpkg --add-architecture riscv64 \
         g++-riscv64-linux-gnu \
         gnupg \
         libc6-dev-riscv64-cross \
+        libstdc++6:riscv64 \
         libzstd-dev \
         libzstd-dev:riscv64 \
         lsb-release \