diff --git a/projects/gitoxide/Dockerfile b/projects/gitoxide/Dockerfile
index 30be15ad4c2f..8e465015384f 100644
--- a/projects/gitoxide/Dockerfile
+++ b/projects/gitoxide/Dockerfile
@@ -16,6 +16,7 @@
 
 FROM gcr.io/oss-fuzz-base/base-builder-rust
 RUN git clone --depth 1 https://github.com/Byron/gitoxide.git gitoxide
+RUN rustup update nightly
 WORKDIR gitoxide
 RUN rustup component add rust-src
 COPY build.sh $SRC/
diff --git a/projects/gitoxide/build.sh b/projects/gitoxide/build.sh
index 7ed2666e0874..ae3843a524aa 100755
--- a/projects/gitoxide/build.sh
+++ b/projects/gitoxide/build.sh
@@ -25,7 +25,7 @@ for CRATE_DIR in ${FUZZ_CRATE_DIRS[@]};
 do
   echo "Building crate: $CRATE_DIR"
   cd $CRATE_DIR
-  cargo fuzz build -O --debug-assertions
+  cargo +nightly fuzz build -O --debug-assertions
   FUZZ_TARGET_OUTPUT_DIR=$CARGO_BUILD_TARGET_DIR/x86_64-unknown-linux-gnu/release
   for f in fuzz/fuzz_targets/*.rs
   do