diff --git a/tests/buildkite/build-containers.sh b/tests/buildkite/build-containers.sh
index 9aec33d1f..1f8c587c9 100755
--- a/tests/buildkite/build-containers.sh
+++ b/tests/buildkite/build-containers.sh
@@ -20,16 +20,16 @@ case "${container}" in
   cpu)
     ;;
 
-  gpu)
+  gpu|gpu_build_centos7)
     BUILD_ARGS="$BUILD_ARGS --build-arg CUDA_VERSION_ARG=$CUDA_VERSION"
     BUILD_ARGS="$BUILD_ARGS --build-arg NCCL_VERSION_ARG=$NCCL_VERSION"
     BUILD_ARGS="$BUILD_ARGS --build-arg RAPIDS_VERSION_ARG=$RAPIDS_VERSION"
     ;;
 
-  gpu_build_centos7)
+  gpu_dev_ver)
     BUILD_ARGS="$BUILD_ARGS --build-arg CUDA_VERSION_ARG=$CUDA_VERSION"
     BUILD_ARGS="$BUILD_ARGS --build-arg NCCL_VERSION_ARG=$NCCL_VERSION"
-    BUILD_ARGS="$BUILD_ARGS --build-arg RAPIDS_VERSION_ARG=$RAPIDS_VERSION"
+    BUILD_ARGS="$BUILD_ARGS --build-arg RAPIDS_VERSION_ARG=$DEV_RAPIDS_VERSION"
     ;;
 
   jvm_gpu_build)
diff --git a/tests/buildkite/conftest.sh b/tests/buildkite/conftest.sh
index 44043910b..ea7a5a00c 100755
--- a/tests/buildkite/conftest.sh
+++ b/tests/buildkite/conftest.sh
@@ -25,6 +25,7 @@ set -x
 CUDA_VERSION=11.8.0
 NCCL_VERSION=2.16.5-1
 RAPIDS_VERSION=24.04
+DEV_RAPIDS_VERSION=24.06
 SPARK_VERSION=3.4.0
 JDK_VERSION=8
 R_VERSION=4.3.2
diff --git a/tests/buildkite/pipeline-nightly.yml b/tests/buildkite/pipeline-nightly.yml
new file mode 100644
index 000000000..495d1b3e4
--- /dev/null
+++ b/tests/buildkite/pipeline-nightly.yml
@@ -0,0 +1,37 @@
+# Nightly CI pipeline, to test against dev versions of dependencies
+
+env:
+  DOCKER_CACHE_ECR_ID: "492475357299"
+  DOCKER_CACHE_ECR_REGION: "us-west-2"
+  DISABLE_RELEASE: "1"
+    # Skip uploading artifacts to S3 bucket
+    # Also, don't build all CUDA archs; just build sm_75
+  USE_DEPS_DEV_VER: "1"
+    # Use dev versions of RAPIDS and other dependencies
+steps:
+  #### -------- CONTAINER BUILD --------
+  - label: ":docker: Build containers"
+    commands:
+      - "tests/buildkite/build-containers.sh gpu_build_centos7"
+      - "tests/buildkite/build-containers.sh gpu_dev_ver"
+    key: build-containers
+    agents:
+      queue: linux-amd64-cpu
+  - wait
+
+  - label: ":console: Build CUDA"
+    command: "tests/buildkite/build-cuda.sh"
+    key: build-cuda
+    agents:
+      queue: linux-amd64-cpu
+  - wait
+  - label: ":console: Test Python package, single GPU"
+    command: "tests/buildkite/test-python-gpu.sh gpu"
+    key: test-python-gpu
+    agents:
+      queue: linux-amd64-gpu
+  - label: ":console: Test Python package, 4 GPUs"
+    command: "tests/buildkite/test-python-gpu.sh mgpu"
+    key: test-python-mgpu
+    agents:
+      queue: linux-amd64-mgpu
diff --git a/tests/buildkite/test-python-gpu.sh b/tests/buildkite/test-python-gpu.sh
index bb61a980d..d7bd729a2 100755
--- a/tests/buildkite/test-python-gpu.sh
+++ b/tests/buildkite/test-python-gpu.sh
@@ -22,10 +22,19 @@ chmod +x build/testxgboost
 # Allocate extra space in /dev/shm to enable NCCL
 export CI_DOCKER_EXTRA_PARAMS_INIT='--shm-size=4g'
 
-command_wrapper="tests/ci_build/ci_build.sh gpu --use-gpus --build-arg "`
+if [[ -z "${USE_DEPS_DEV_VER-}" ]]
+then
+  container_tag='gpu'
+  rapids_version=${RAPIDS_VERSION}
+else
+  container_tag='gpu_dev_ver'
+  rapids_version=${DEV_RAPIDS_VERSION}
+fi
+
+command_wrapper="tests/ci_build/ci_build.sh ${container_tag} --use-gpus --build-arg "`
                 `"CUDA_VERSION_ARG=$CUDA_VERSION --build-arg "`
-                `"RAPIDS_VERSION_ARG=$RAPIDS_VERSION --build-arg "`
-		`"NCCL_VERSION_ARG=$NCCL_VERSION"
+                `"RAPIDS_VERSION_ARG=${rapids_version} --build-arg "`
+                `"NCCL_VERSION_ARG=$NCCL_VERSION"
 
 # Run specified test suite
 case "$suite" in
diff --git a/tests/buildkite/update-rapids.sh b/tests/buildkite/update-rapids.sh
index f617ccd11..f6a2675bd 100755
--- a/tests/buildkite/update-rapids.sh
+++ b/tests/buildkite/update-rapids.sh
@@ -4,7 +4,10 @@ set -euo pipefail
 
 LATEST_RAPIDS_VERSION=$(gh api repos/rapidsai/cuml/releases/latest --jq '.name' | sed -e 's/^v\([[:digit:]]\+\.[[:digit:]]\+\).*/\1/')
 echo "LATEST_RAPIDS_VERSION = $LATEST_RAPIDS_VERSION"
+DEV_RAPIDS_VERSION=$(date +%Y-%m-%d -d "20${LATEST_RAPIDS_VERSION//./-}-01 + 2 month" | cut -c3-7 | tr - .)
+echo "DEV_RAPIDS_VERSION = $DEV_RAPIDS_VERSION"
 
 PARENT_PATH=$( cd "$(dirname "${BASH_SOURCE[0]}")" ; pwd -P )
 
 sed -i "s/^RAPIDS_VERSION=[[:digit:]]\+\.[[:digit:]]\+/RAPIDS_VERSION=${LATEST_RAPIDS_VERSION}/" $PARENT_PATH/conftest.sh
+sed -i "s/^DEV_RAPIDS_VERSION=[[:digit:]]\+\.[[:digit:]]\+/DEV_RAPIDS_VERSION=${DEV_RAPIDS_VERSION}/" $PARENT_PATH/conftest.sh
diff --git a/tests/ci_build/Dockerfile.aarch64 b/tests/ci_build/Dockerfile.aarch64
index 9b06e1c83..f028e635b 100644
--- a/tests/ci_build/Dockerfile.aarch64
+++ b/tests/ci_build/Dockerfile.aarch64
@@ -10,7 +10,7 @@ RUN \
     yum update -y && \
     yum install -y devtoolset-9 && \
     # Python
-    wget -nv -O conda.sh https://github.com/conda-forge/miniforge/releases/download/22.11.1-2/Mambaforge-22.11.1-2-Linux-aarch64.sh && \
+    wget -nv -O conda.sh https://github.com/conda-forge/miniforge/releases/download/24.3.0-0/Miniforge3-24.3.0-0-Linux-aarch64.sh && \
     bash conda.sh -b -p /opt/mambaforge
 
 ENV PATH=/opt/mambaforge/bin:$PATH
@@ -23,7 +23,7 @@ ENV GOSU_VERSION 1.10
 COPY conda_env/aarch64_test.yml /scripts/
 RUN mamba create -n aarch64_test && \
     mamba env update -n aarch64_test --file=/scripts/aarch64_test.yml && \
-    mamba clean --all
+    mamba clean --all --yes
 
 # Install lightweight sudo (not bound to TTY)
 RUN set -ex; \
diff --git a/tests/ci_build/Dockerfile.cpu b/tests/ci_build/Dockerfile.cpu
index fa9ea772d..6ca574f51 100644
--- a/tests/ci_build/Dockerfile.cpu
+++ b/tests/ci_build/Dockerfile.cpu
@@ -12,7 +12,7 @@ RUN \
     apt-get update && \
     apt-get install -y tar unzip wget git build-essential doxygen graphviz llvm libidn12 cmake ninja-build gcc-9 g++-9 openjdk-8-jdk-headless && \
     # Python
-    wget -nv -O conda.sh https://github.com/conda-forge/miniforge/releases/download/22.11.1-2/Mambaforge-22.11.1-2-Linux-x86_64.sh && \
+    wget -nv -O conda.sh https://github.com/conda-forge/miniforge/releases/download/24.3.0-0/Miniforge3-24.3.0-0-Linux-x86_64.sh && \
     bash conda.sh -b -p /opt/mambaforge
 
 ENV PATH=/opt/mambaforge/bin:$PATH
@@ -36,7 +36,7 @@ RUN git clone -b v1.49.1 https://github.com/grpc/grpc.git \
 COPY conda_env/linux_cpu_test.yml /scripts/
 RUN mamba create -n linux_cpu_test && \
     mamba env update -n linux_cpu_test --file=/scripts/linux_cpu_test.yml && \
-    mamba clean --all && \
+    mamba clean --all --yes && \
     conda run --no-capture-output -n linux_cpu_test pip install buildkite-test-collector
 
 # Install lightweight sudo (not bound to TTY)
diff --git a/tests/ci_build/Dockerfile.gpu b/tests/ci_build/Dockerfile.gpu
index 255dd9d71..f68ba9d6b 100644
--- a/tests/ci_build/Dockerfile.gpu
+++ b/tests/ci_build/Dockerfile.gpu
@@ -14,7 +14,7 @@ RUN \
     apt-get update && \
     apt-get install -y wget unzip bzip2 libgomp1 build-essential openjdk-8-jdk-headless && \
     # Python
-    wget -nv -O conda.sh https://github.com/conda-forge/miniforge/releases/download/22.11.1-2/Mambaforge-22.11.1-2-Linux-x86_64.sh && \
+    wget -nv -O conda.sh https://github.com/conda-forge/miniforge/releases/download/24.3.0-0/Miniforge3-24.3.0-0-Linux-x86_64.sh && \
     bash conda.sh -b -p /opt/mambaforge
 
 ENV PATH=/opt/mambaforge/bin:$PATH
@@ -22,14 +22,14 @@ ENV PATH=/opt/mambaforge/bin:$PATH
 # Create new Conda environment with cuDF, Dask, and cuPy
 RUN \
     export NCCL_SHORT_VER=$(echo "$NCCL_VERSION_ARG" | cut -d "-" -f 1) && \
-    mamba create -y -n gpu_test -c rapidsai -c nvidia -c conda-forge \
+    mamba create -y -n gpu_test -c rapidsai -c conda-forge -c nvidia \
         python=3.10 cudf=$RAPIDS_VERSION_ARG* rmm=$RAPIDS_VERSION_ARG* cudatoolkit=$CUDA_VERSION_ARG \
         "nccl>=${NCCL_SHORT_VER}" \
         dask=2024.1.1 \
         dask-cuda=$RAPIDS_VERSION_ARG* dask-cudf=$RAPIDS_VERSION_ARG* cupy \
         numpy pytest pytest-timeout scipy scikit-learn pandas matplotlib wheel python-kubernetes urllib3 graphviz hypothesis \
         "pyspark>=3.4.0" cloudpickle cuda-python && \
-    mamba clean --all && \
+    mamba clean --all --yes && \
     conda run --no-capture-output -n gpu_test pip install buildkite-test-collector
 
 ENV GOSU_VERSION 1.10
diff --git a/tests/ci_build/Dockerfile.gpu_build_centos7 b/tests/ci_build/Dockerfile.gpu_build_centos7
index 16445de2a..993402725 100644
--- a/tests/ci_build/Dockerfile.gpu_build_centos7
+++ b/tests/ci_build/Dockerfile.gpu_build_centos7
@@ -13,7 +13,7 @@ RUN \
     yum -y update && \
     yum install -y tar unzip wget xz git which ninja-build devtoolset-9-gcc devtoolset-9-binutils devtoolset-9-gcc-c++ && \
     # Python
-    wget -nv -O conda.sh https://github.com/conda-forge/miniforge/releases/download/22.11.1-2/Mambaforge-22.11.1-2-Linux-x86_64.sh && \
+    wget -nv -O conda.sh https://github.com/conda-forge/miniforge/releases/download/24.3.0-0/Miniforge3-24.3.0-0-Linux-x86_64.sh && \
     bash conda.sh -b -p /opt/mambaforge && \
     /opt/mambaforge/bin/python -m pip install awscli && \
     # CMake
diff --git a/tests/ci_build/Dockerfile.gpu_build_r_centos7 b/tests/ci_build/Dockerfile.gpu_build_r_centos7
index 7c95f09b5..bfe1cf221 100644
--- a/tests/ci_build/Dockerfile.gpu_build_r_centos7
+++ b/tests/ci_build/Dockerfile.gpu_build_r_centos7
@@ -35,7 +35,7 @@ RUN \
 
 run \
     # Python
-    wget -nv -O conda.sh https://github.com/conda-forge/miniforge/releases/download/22.11.1-2/Mambaforge-22.11.1-2-Linux-x86_64.sh && \
+    wget -nv -O conda.sh https://github.com/conda-forge/miniforge/releases/download/24.3.0-0/Miniforge3-24.3.0-0-Linux-x86_64.sh && \
     bash conda.sh -b -p /opt/mambaforge && \
     /opt/mambaforge/bin/python -m pip install auditwheel awscli && \
     # CMake
diff --git a/tests/ci_build/Dockerfile.gpu_dev_ver b/tests/ci_build/Dockerfile.gpu_dev_ver
new file mode 100644
index 000000000..a592d4891
--- /dev/null
+++ b/tests/ci_build/Dockerfile.gpu_dev_ver
@@ -0,0 +1,52 @@
+# Container to test XGBoost against dev versions of dependencies
+
+ARG CUDA_VERSION_ARG
+FROM nvidia/cuda:$CUDA_VERSION_ARG-runtime-ubuntu22.04
+ARG CUDA_VERSION_ARG
+ARG RAPIDS_VERSION_ARG
+  # Should be first 4 digits of the dev version (e.g. 24.06)
+ARG NCCL_VERSION_ARG
+
+# Environment
+ENV DEBIAN_FRONTEND noninteractive
+SHELL ["/bin/bash", "-c"]   # Use Bash as shell
+
+# Install all basic requirements
+RUN \
+    apt-key adv --fetch-keys https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2204/x86_64/3bf863cc.pub && \
+    apt-get update && \
+    apt-get install -y wget unzip bzip2 libgomp1 build-essential openjdk-8-jdk-headless && \
+    # Python
+    wget -nv -O conda.sh https://github.com/conda-forge/miniforge/releases/download/24.3.0-0/Miniforge3-24.3.0-0-Linux-x86_64.sh && \
+    bash conda.sh -b -p /opt/mambaforge
+
+ENV PATH=/opt/mambaforge/bin:$PATH
+
+# Create new Conda environment with dev versions of cuDF, Dask, and cuPy
+RUN \
+    export NCCL_SHORT_VER=$(echo "$NCCL_VERSION_ARG" | cut -d "-" -f 1) && \
+    mamba create -y -n gpu_test -c rapidsai-nightly -c conda-forge -c nvidia \
+        python=3.10 "cudf=$RAPIDS_VERSION_ARG.*" "rmm=$RAPIDS_VERSION_ARG.*" cudatoolkit=$CUDA_VERSION_ARG \
+        "nccl>=${NCCL_SHORT_VER}" \
+        dask=2024.1.1 \
+        "dask-cuda=$RAPIDS_VERSION_ARG.*" "dask-cudf=$RAPIDS_VERSION_ARG.*" cupy \
+        numpy pytest pytest-timeout scipy scikit-learn pandas matplotlib wheel python-kubernetes urllib3 graphviz hypothesis \
+        "pyspark>=3.4.0" cloudpickle cuda-python && \
+    mamba clean --all --yes && \
+    conda run --no-capture-output -n gpu_test pip install buildkite-test-collector
+
+ENV GOSU_VERSION 1.10
+ENV JAVA_HOME /usr/lib/jvm/java-8-openjdk-amd64/
+
+# Install lightweight sudo (not bound to TTY)
+RUN set -ex; \
+    wget -nv -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-amd64" && \
+    chmod +x /usr/local/bin/gosu && \
+    gosu nobody true
+
+# Default entry-point to use if running locally
+# It will preserve attributes of created files
+COPY entrypoint.sh /scripts/
+
+WORKDIR /workspace
+ENTRYPOINT ["/scripts/entrypoint.sh"]
diff --git a/tests/ci_build/Dockerfile.jvm b/tests/ci_build/Dockerfile.jvm
index a115fd52c..4f447cbba 100644
--- a/tests/ci_build/Dockerfile.jvm
+++ b/tests/ci_build/Dockerfile.jvm
@@ -9,7 +9,7 @@ RUN \
                    devtoolset-9-gcc devtoolset-9-binutils devtoolset-9-gcc-c++ \
                    devtoolset-9-runtime devtoolset-9-libstdc++-devel && \
     # Python
-    wget -nv -O conda.sh https://github.com/conda-forge/miniforge/releases/download/22.11.1-2/Mambaforge-22.11.1-2-Linux-x86_64.sh && \
+    wget -nv -O conda.sh https://github.com/conda-forge/miniforge/releases/download/24.3.0-0/Miniforge3-24.3.0-0-Linux-x86_64.sh && \
     bash conda.sh -b -p /opt/mambaforge && \
     # CMake
     wget -nv -nc https://cmake.org/files/v3.18/cmake-3.18.0-Linux-x86_64.sh --no-check-certificate && \
diff --git a/tests/ci_build/Dockerfile.jvm_cross b/tests/ci_build/Dockerfile.jvm_cross
index 43988872d..9ba7b6e69 100644
--- a/tests/ci_build/Dockerfile.jvm_cross
+++ b/tests/ci_build/Dockerfile.jvm_cross
@@ -13,7 +13,7 @@ RUN \
     apt-get update && \
     apt-get install -y tar unzip wget openjdk-$JDK_VERSION-jdk libgomp1 && \
     # Python
-    wget -nv -O conda.sh https://github.com/conda-forge/miniforge/releases/download/22.11.1-2/Mambaforge-22.11.1-2-Linux-x86_64.sh && \
+    wget -nv -O conda.sh https://github.com/conda-forge/miniforge/releases/download/24.3.0-0/Miniforge3-24.3.0-0-Linux-x86_64.sh && \
     bash conda.sh -b -p /opt/mambaforge && \
     /opt/mambaforge/bin/pip install awscli && \
     # Maven
diff --git a/tests/ci_build/Dockerfile.jvm_gpu_build b/tests/ci_build/Dockerfile.jvm_gpu_build
index cee418942..7bd49b5a9 100644
--- a/tests/ci_build/Dockerfile.jvm_gpu_build
+++ b/tests/ci_build/Dockerfile.jvm_gpu_build
@@ -12,7 +12,7 @@ RUN \
     yum -y update && \
     yum install -y tar unzip wget xz git which ninja-build java-1.8.0-openjdk-devel devtoolset-9-gcc devtoolset-9-binutils devtoolset-9-gcc-c++ && \
     # Python
-    wget -nv -O conda.sh https://github.com/conda-forge/miniforge/releases/download/22.11.1-2/Mambaforge-22.11.1-2-Linux-x86_64.sh && \
+    wget -nv -O conda.sh https://github.com/conda-forge/miniforge/releases/download/24.3.0-0/Miniforge3-24.3.0-0-Linux-x86_64.sh && \
     bash conda.sh -b -p /opt/mambaforge && \
     # CMake
     wget -nv -nc https://cmake.org/files/v3.18/cmake-3.18.0-Linux-x86_64.sh --no-check-certificate && \