diff --git a/.github/workflows/build-wheel.yml b/.github/workflows/build-wheel.yml
index f5d6aae12..0db9fec31 100644
--- a/.github/workflows/build-wheel.yml
+++ b/.github/workflows/build-wheel.yml
@@ -44,19 +44,24 @@ jobs:
         with:
           fetch-depth: 0
 
-      # The env vars ACTIONS_CACHE_SERVICE_V2, ACTIONS_RESULTS_URL, and ACTIONS_RUNTIME_TOKEN
-      # are exposed by this action.
-      - name: Enable sccache
+      - name: Install latest rapidsai/sccache
         if: ${{ startsWith(inputs.host-platform, 'linux') }}
-        uses: mozilla-actions/sccache-action@7d986dd989559c6ecdb630a3fd2557667be217ad  # 0.0.9
+        run: |
+          curl -fsSL "https://github.com/rapidsai/sccache/releases/latest/download/sccache-$(uname -m)-unknown-linux-musl.tar.gz" \
+            | sudo tar -C /usr/local/bin -xvzf - --wildcards --strip-components=1 -x '*/sccache'
+          echo "SCCACHE_PATH=/usr/local/bin/sccache" >> "$GITHUB_ENV"
+          echo "SCCACHE_GHA_USE_PREPROCESSOR_CACHE_MODE=true" >> "$GITHUB_ENV"
 
       # xref: https://github.com/orgs/community/discussions/42856#discussioncomment-7678867
       - name: Adding addtional GHA cache-related env vars
-        uses: actions/github-script@v7
+        uses: actions/github-script@v8
         with:
           script: |
-            core.exportVariable('ACTIONS_CACHE_URL', process.env['ACTIONS_CACHE_URL'])
-            core.exportVariable('ACTIONS_RUNTIME_URL', process.env['ACTIONS_RUNTIME_URL'])
+            core.exportVariable('ACTIONS_CACHE_SERVICE_V2', 'on');
+            core.exportVariable('ACTIONS_CACHE_URL', process.env['ACTIONS_CACHE_URL'] || '');
+            core.exportVariable('ACTIONS_RESULTS_URL', process.env['ACTIONS_RESULTS_URL'] || '');
+            core.exportVariable('ACTIONS_RUNTIME_URL', process.env['ACTIONS_RUNTIME_URL'] || '');
+            core.exportVariable('ACTIONS_RUNTIME_TOKEN', process.env['ACTIONS_RUNTIME_TOKEN'] || '');
 
       - name: Setup proxy cache
         uses: nv-gha-runners/setup-proxy-cache@main
@@ -104,11 +109,10 @@ jobs:
             ACTIONS_RESULTS_URL=${{ env.ACTIONS_RESULTS_URL }}
             ACTIONS_CACHE_URL=${{ env.ACTIONS_CACHE_URL }}
             ACTIONS_CACHE_SERVICE_V2=${{ env.ACTIONS_CACHE_SERVICE_V2 }}
-            SCCACHE_DIR=/host/${{ env.SCCACHE_DIR }}
-            SCCACHE_CACHE_SIZE=${{ env.SCCACHE_CACHE_SIZE }}
+            SCCACHE_GHA_USE_PREPROCESSOR_CACHE_MODE=${{ env.SCCACHE_GHA_USE_PREPROCESSOR_CACHE_MODE }}
           # check cache stats before leaving cibuildwheel
           CIBW_BEFORE_TEST_LINUX: >
-            "/host/${{ env.SCCACHE_PATH }}" --show-stats
+            "/host/${{ env.SCCACHE_PATH }}" --show-adv-stats
           # force the test stage to be run (so that before-test is not skipped)
           # TODO: we might want to think twice on adding this, it does a lot of
           # things before reaching this command.
@@ -154,19 +158,24 @@ jobs:
         with:
           fetch-depth: 0
 
-      # The env vars ACTIONS_CACHE_SERVICE_V2, ACTIONS_RESULTS_URL, and ACTIONS_RUNTIME_TOKEN
-      # are exposed by this action.
-      - name: Enable sccache
+      - name: Install latest rapidsai/sccache
         if: ${{ startsWith(inputs.host-platform, 'linux') }}
-        uses: mozilla-actions/sccache-action@7d986dd989559c6ecdb630a3fd2557667be217ad  # 0.0.9
+        run: |
+          curl -fsSL "https://github.com/rapidsai/sccache/releases/latest/download/sccache-$(uname -m)-unknown-linux-musl.tar.gz" \
+            | sudo tar -C /usr/local/bin -xvzf - --wildcards --strip-components=1 -x '*/sccache'
+          echo "SCCACHE_PATH=/usr/local/bin/sccache" >> "$GITHUB_ENV"
+          echo "SCCACHE_GHA_USE_PREPROCESSOR_CACHE_MODE=true" >> "$GITHUB_ENV"
 
       # xref: https://github.com/orgs/community/discussions/42856#discussioncomment-7678867
       - name: Adding addtional GHA cache-related env vars
-        uses: actions/github-script@v7
+        uses: actions/github-script@v8
         with:
           script: |
-            core.exportVariable('ACTIONS_CACHE_URL', process.env['ACTIONS_CACHE_URL'])
-            core.exportVariable('ACTIONS_RUNTIME_URL', process.env['ACTIONS_RUNTIME_URL'])
+            core.exportVariable('ACTIONS_CACHE_SERVICE_V2', 'on');
+            core.exportVariable('ACTIONS_CACHE_URL', process.env['ACTIONS_CACHE_URL'] || '');
+            core.exportVariable('ACTIONS_RESULTS_URL', process.env['ACTIONS_RESULTS_URL'] || '');
+            core.exportVariable('ACTIONS_RUNTIME_URL', process.env['ACTIONS_RUNTIME_URL'] || '');
+            core.exportVariable('ACTIONS_RUNTIME_TOKEN', process.env['ACTIONS_RUNTIME_TOKEN'] || '');
 
       - name: Setup proxy cache
         uses: nv-gha-runners/setup-proxy-cache@main
@@ -227,8 +236,8 @@ jobs:
         run: |
           pushd testing
           if [[ "${{ inputs.host-platform }}" == linux* ]]; then
-            PATH=$(dirname ${SCCACHE_PATH}):${PATH}
-            SCCACHE_GHA_ENABLED=true
+            export PATH=$(dirname ${SCCACHE_PATH}):${PATH}
+            export SCCACHE_GHA_ENABLED=true
           fi
 
           nvcc --version
@@ -247,6 +256,10 @@ jobs:
           done
           popd
 
+          if [[ "${{ inputs.host-platform }}" == linux* ]]; then
+            "${SCCACHE_PATH}" --show-adv-stats
+          fi
+
       - name: Upload numba-cuda test artifacts
         uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02  # v4.6.2
         with:
diff --git a/ci/tools/env-vars b/ci/tools/env-vars
index 83f1145a1..42640debc 100755
--- a/ci/tools/env-vars
+++ b/ci/tools/env-vars
@@ -36,9 +36,6 @@ if [[ "${1}" == "build" ]]; then
   # here we only need to specify the python version we want
   echo "CIBW_BUILD=cp${PYTHON_VERSION_FORMATTED}-*" >> $GITHUB_ENV
   NUMBA_CUDA_ARTIFACT_BASENAME="numba-cuda-python${PYTHON_VERSION_FORMATTED}-${HOST_PLATFORM}"
-  # Enforce an explicit cache dir so that we can reuse this path later
-  echo "SCCACHE_DIR=${HOME}/.cache/sccache" >> $GITHUB_ENV
-  echo "SCCACHE_CACHE_SIZE=1G" >> $GITHUB_ENV
 elif [[ "${1}" == "test" ]]; then
   TEST_CUDA_MAJOR="$(cut -d '.' -f 1 <<< ${CUDA_VER})"
   TEST_CUDA_MINOR="$(cut -d '.' -f 2 <<< ${CUDA_VER})"
diff --git a/testing/Makefile b/testing/Makefile
index be015e962..014413407 100644
--- a/testing/Makefile
+++ b/testing/Makefile
@@ -31,7 +31,7 @@ MULTI_FATBIN_GENCODE := $(MULTI_GENCODE) -gencode arch=compute_$(ALT_CC),code=[s
 # LTO-IR tests need to generate for the LTO "architecture" instead
 LTOIR_GENCODE := -gencode arch=lto_$(GPU_CC),code=lto_$(GPU_CC)
 
-# In CI we use sccache. Note that sccache does not support generating fatbin or ltoir.
+# In CI we use sccache
 ifeq ($(shell command -v sccache 2>&1 >/dev/null; echo $$?),0)
     SCCACHE := sccache
 else
@@ -62,10 +62,10 @@ $(OUTPUT_DIR)/test_device_functions.cubin: test_device_functions.cu
 	$(SCCACHE) nvcc $(NVCC_FLAGS) $(CUBIN_FLAGS) -o $@ $<
 
 $(OUTPUT_DIR)/test_device_functions.fatbin: test_device_functions.cu
-	nvcc $(NVCC_FLAGS) $(FATBIN_FLAGS) -o $@ $<
+	$(SCCACHE) nvcc $(NVCC_FLAGS) $(FATBIN_FLAGS) -o $@ $<
 
 $(OUTPUT_DIR)/test_device_functions_multi.fatbin: test_device_functions.cu
-	nvcc $(NVCC_FLAGS) $(MULTI_FATBIN_FLAGS) -o $@ $<
+	$(SCCACHE) nvcc $(NVCC_FLAGS) $(MULTI_FATBIN_FLAGS) -o $@ $<
 
 $(OUTPUT_DIR)/test_device_functions.ptx: test_device_functions.cu
 	$(SCCACHE) nvcc $(NVCC_FLAGS) $(PTX_FLAGS) -o $@ $<
@@ -77,7 +77,7 @@ $(OUTPUT_DIR)/test_device_functions.a: test_device_functions.cu
 	nvcc $(NVCC_FLAGS) $(LIBRARY_FLAGS) -o $@ $<
 
 $(OUTPUT_DIR)/test_device_functions.ltoir.o: test_device_functions.cu
-	nvcc $(NVCC_FLAGS) $(LTOIR_FLAGS) -o $@ $<
+	$(SCCACHE) nvcc $(NVCC_FLAGS) $(LTOIR_FLAGS) -o $@ $<
 
 $(OUTPUT_DIR)/test_device_functions.ltoir: test_device_functions.cu
 	# Generate LTO-IR in a "raw" LTO-IR container
@@ -96,10 +96,10 @@ $(OUTPUT_DIR)/nrt_extern.cubin: nrt_extern.cu
 	$(SCCACHE) nvcc $(NVCC_FLAGS) $(CUBIN_FLAGS) -o $@ $< -I$(NRT_INCLUDE_DIR)
 
 $(OUTPUT_DIR)/nrt_extern.fatbin: nrt_extern.cu
-	nvcc $(NVCC_FLAGS) $(FATBIN_FLAGS) -o $@ $< -I$(NRT_INCLUDE_DIR)
+	$(SCCACHE) nvcc $(NVCC_FLAGS) $(FATBIN_FLAGS) -o $@ $< -I$(NRT_INCLUDE_DIR)
 
 $(OUTPUT_DIR)/nrt_extern_multi.fatbin: nrt_extern.cu
-	nvcc $(NVCC_FLAGS) $(MULTI_FATBIN_FLAGS) -o $@ $< -I$(NRT_INCLUDE_DIR)
+	$(SCCACHE) nvcc $(NVCC_FLAGS) $(MULTI_FATBIN_FLAGS) -o $@ $< -I$(NRT_INCLUDE_DIR)
 
 $(OUTPUT_DIR)/nrt_extern.ptx: nrt_extern.cu
 	$(SCCACHE) nvcc $(NVCC_FLAGS) $(PTX_FLAGS) -o $@ $< -I$(NRT_INCLUDE_DIR)
@@ -111,7 +111,7 @@ $(OUTPUT_DIR)/nrt_extern.a: nrt_extern.cu
 	nvcc $(NVCC_FLAGS) $(LIBRARY_FLAGS) -o $@ $< -I$(NRT_INCLUDE_DIR)
 
 $(OUTPUT_DIR)/nrt_extern.ltoir.o: nrt_extern.cu
-	nvcc $(NVCC_FLAGS) $(LTOIR_FLAGS) -o $@ $< -I$(NRT_INCLUDE_DIR)
+	$(SCCACHE) nvcc $(NVCC_FLAGS) $(LTOIR_FLAGS) -o $@ $< -I$(NRT_INCLUDE_DIR)
 
 $(OUTPUT_DIR)/nrt_extern.ltoir: nrt_extern.cu
 	python generate_raw_ltoir.py --arch sm_$(GPU_CC) -o $@ $< --nrt