diff --git a/ci/docker/build_deps_spack.Dockerfile b/ci/docker/build_deps_spack.Dockerfile
index 1186749158..cbc3f1ec13 100644
--- a/ci/docker/build_deps_spack.Dockerfile
+++ b/ci/docker/build_deps_spack.Dockerfile
@@ -57,22 +57,22 @@ RUN git clone https://github.com/hpc/xpmem \
 ARG NUM_PROCS
 ENV NUM_PROCS=${NUM_PROCS:-32}
 
-# Install Spack and Spack packages from July 17, 2025
+# Install Spack and Spack packages
 WORKDIR /root/spack
 ARG SPACK_VERSION
-ENV SPACK_VERSION=${SPACK_VERSION:-a572692b6da3ae74633b53b236023862f7284ad4}
+ENV SPACK_VERSION=${SPACK_VERSION:-1.0.0}
 ARG SPACK_PACKAGES_VERSION
-ENV SPACK_PACKAGES_VERSION=${SPACK_PACKAGES_VERSION:-97d47813671327ab07a5c840fa549d130baacbb2}
+ENV SPACK_PACKAGES_VERSION=${SPACK_PACKAGES_VERSION:-2025.07.0}
 ARG SPACK_REPO=https://github.com/spack/spack
 ENV SPACK_ROOT=/opt/spack-${SPACK_VERSION}
 ARG SPACK_PACKAGES_REPO=https://github.com/spack/spack-packages
 ENV SPACK_PACKAGES_ROOT=/opt/spack-packages-${SPACK_PACKAGES_VERSION}
 RUN mkdir -p ${SPACK_ROOT} \
-    && wget -q ${SPACK_REPO}/archive/${SPACK_VERSION}.tar.gz \
-    && tar -xzf ${SPACK_VERSION}.tar.gz -C /opt && rm -f ${SPACK_VERSION}.tar.gz \
+    && wget -q ${SPACK_REPO}/archive/v${SPACK_VERSION}.tar.gz \
+    && tar -xzf v${SPACK_VERSION}.tar.gz -C /opt && rm -f v${SPACK_VERSION}.tar.gz \
     && mkdir -p ${SPACK_PACKAGES_ROOT} \
-    && wget -q ${SPACK_PACKAGES_REPO}/archive/${SPACK_PACKAGES_VERSION}.tar.gz \
-    && tar -xzf ${SPACK_PACKAGES_VERSION}.tar.gz -C /opt && rm -f ${SPACK_PACKAGES_VERSION}.tar.gz
+    && wget -q ${SPACK_PACKAGES_REPO}/archive/v${SPACK_PACKAGES_VERSION}.tar.gz \
+    && tar -xzf v${SPACK_PACKAGES_VERSION}.tar.gz -C /opt && rm -f v${SPACK_PACKAGES_VERSION}.tar.gz
 
 ENV PATH="${SPACK_ROOT}/bin:${PATH}"
 
diff --git a/tools/docker/Dockerfile.test_spack b/tools/docker/Dockerfile.test_spack
index c1f8cd4103..c1582dadc8 100644
--- a/tools/docker/Dockerfile.test_spack
+++ b/tools/docker/Dockerfile.test_spack
@@ -45,22 +45,22 @@ RUN pip3 install --quiet boto3==1.38.11 google-cloud-storage==3.1.0
 ARG NUM_PROCS
 ENV NUM_PROCS=${NUM_PROCS:-32}
 
-# Install Spack and Spack packages from July 17, 2025
+# Install Spack and Spack packages
 WORKDIR /root/spack
 ARG SPACK_VERSION
-ENV SPACK_VERSION=${SPACK_VERSION:-a572692b6da3ae74633b53b236023862f7284ad4}
+ENV SPACK_VERSION=${SPACK_VERSION:-1.0.0}
 ARG SPACK_PACKAGES_VERSION
-ENV SPACK_PACKAGES_VERSION=${SPACK_PACKAGES_VERSION:-97d47813671327ab07a5c840fa549d130baacbb2}
+ENV SPACK_PACKAGES_VERSION=${SPACK_PACKAGES_VERSION:-2025.07.0}
 ARG SPACK_REPO=https://github.com/spack/spack
 ENV SPACK_ROOT=/opt/spack-${SPACK_VERSION}
 ARG SPACK_PACKAGES_REPO=https://github.com/spack/spack-packages
 ENV SPACK_PACKAGES_ROOT=/opt/spack-packages-${SPACK_PACKAGES_VERSION}
 RUN mkdir -p ${SPACK_ROOT} \
-    && wget -q ${SPACK_REPO}/archive/${SPACK_VERSION}.tar.gz \
-    && tar -xzf ${SPACK_VERSION}.tar.gz -C /opt && rm -f ${SPACK_VERSION}.tar.gz \
+    && wget -q ${SPACK_REPO}/archive/v${SPACK_VERSION}.tar.gz \
+    && tar -xzf v${SPACK_VERSION}.tar.gz -C /opt && rm -f v${SPACK_VERSION}.tar.gz \
     && mkdir -p ${SPACK_PACKAGES_ROOT} \
-    && wget -q ${SPACK_PACKAGES_REPO}/archive/${SPACK_PACKAGES_VERSION}.tar.gz \
-    && tar -xzf ${SPACK_PACKAGES_VERSION}.tar.gz -C /opt && rm -f ${SPACK_PACKAGES_VERSION}.tar.gz
+    && wget -q ${SPACK_PACKAGES_REPO}/archive/v${SPACK_PACKAGES_VERSION}.tar.gz \
+    && tar -xzf v${SPACK_PACKAGES_VERSION}.tar.gz -C /opt && rm -f v${SPACK_PACKAGES_VERSION}.tar.gz
 
 ENV PATH="${SPACK_ROOT}/bin:${PATH}"
 
diff --git a/tools/docker/generate_dockerfiles.py b/tools/docker/generate_dockerfiles.py
index d10db6cbb5..a074c1605c 100755
--- a/tools/docker/generate_dockerfiles.py
+++ b/tools/docker/generate_dockerfiles.py
@@ -876,22 +876,22 @@ RUN pip3 install --quiet boto3==1.38.11 google-cloud-storage==3.1.0
 ARG NUM_PROCS
 ENV NUM_PROCS=${{NUM_PROCS:-32}}
 
-# Install Spack and Spack packages from July 17, 2025
+# Install Spack and Spack packages
 WORKDIR /root/spack
 ARG SPACK_VERSION
-ENV SPACK_VERSION=${{SPACK_VERSION:-a572692b6da3ae74633b53b236023862f7284ad4}}
+ENV SPACK_VERSION=${{SPACK_VERSION:-1.0.0}}
 ARG SPACK_PACKAGES_VERSION
-ENV SPACK_PACKAGES_VERSION=${{SPACK_PACKAGES_VERSION:-97d47813671327ab07a5c840fa549d130baacbb2}}
+ENV SPACK_PACKAGES_VERSION=${{SPACK_PACKAGES_VERSION:-2025.07.0}}
 ARG SPACK_REPO=https://github.com/spack/spack
 ENV SPACK_ROOT=/opt/spack-${{SPACK_VERSION}}
 ARG SPACK_PACKAGES_REPO=https://github.com/spack/spack-packages
 ENV SPACK_PACKAGES_ROOT=/opt/spack-packages-${{SPACK_PACKAGES_VERSION}}
 RUN mkdir -p ${{SPACK_ROOT}} \
-    && wget -q ${{SPACK_REPO}}/archive/${{SPACK_VERSION}}.tar.gz \
-    && tar -xzf ${{SPACK_VERSION}}.tar.gz -C /opt && rm -f ${{SPACK_VERSION}}.tar.gz \
+    && wget -q ${{SPACK_REPO}}/archive/v${{SPACK_VERSION}}.tar.gz \
+    && tar -xzf v${{SPACK_VERSION}}.tar.gz -C /opt && rm -f v${{SPACK_VERSION}}.tar.gz \
     && mkdir -p ${{SPACK_PACKAGES_ROOT}} \
-    && wget -q ${{SPACK_PACKAGES_REPO}}/archive/${{SPACK_PACKAGES_VERSION}}.tar.gz \
-    && tar -xzf ${{SPACK_PACKAGES_VERSION}}.tar.gz -C /opt && rm -f ${{SPACK_PACKAGES_VERSION}}.tar.gz
+    && wget -q ${{SPACK_PACKAGES_REPO}}/archive/v${{SPACK_PACKAGES_VERSION}}.tar.gz \
+    && tar -xzf v${{SPACK_PACKAGES_VERSION}}.tar.gz -C /opt && rm -f v${{SPACK_PACKAGES_VERSION}}.tar.gz
 
 ENV PATH="${{SPACK_ROOT}}/bin:${{PATH}}"