diff --git a/_data/docs.yml b/_data/docs.yml
index 66aef99a165..62a5c0f1fbe 100644
--- a/_data/docs.yml
+++ b/_data/docs.yml
@@ -57,39 +57,6 @@ apis:
       legacy: 1
       stable: 1
       nightly: 1
-  cuspatial:
-    name: cuSpatial
-    path: cuspatial
-    desc: 'cuSpatial is a GPU-accelerated vector GIS library including binary predicates (DE-9IM), point-in-polygon, spatial join, distances, and trajectory analysis.'
-    ghlink: https://github.com/rapidsai/cuspatial
-    cllink: https://github.com/rapidsai/cuspatial/blob/main/CHANGELOG.md
-    versions:
-      # enable or disable links; 0 = disabled, 1 = enabled
-      legacy: 1
-      stable: 0
-      nightly: 0
-  cuproj:
-    name: cuProj
-    path: cuProj
-    desc: 'cuProj is a GPU-accelerated geographic and geodetic coordinate transformation library which supports projecting coordinates between coordinate reference systems (CRSes), compatible with PyProj.'
-    ghlink: https://github.com/rapidsai/cuspatial/tree/main/python/cuproj
-    cllink: https://github.com/rapidsai/cuspatial/blob/main/CHANGELOG.md # cuProj is housed within cuSpatial so updates remain in the cuSpatial changelog
-    versions:
-      # enable or disable links; 0 = disabled, 1 = enabled
-      legacy: 1
-      stable: 0
-      nightly: 0
-  cusignal:
-    name: cusignal
-    path: cusignal
-    desc: 'cuSignal functionality has been moved to CuPy. Please see the CuPy documentation for more information.'
-    ghlink: https://github.com/cupy/cupy
-    cllink: https://docs.cupy.dev/en/latest/reference/scipy_signal.html
-    versions:
-      # enable or disable links; 0 = disabled, 1 = enabled
-      legacy: 0
-      stable: 0
-      nightly: 0
   cudf-java:
     name: 'Java + cuDF'
     path: cudf-java
@@ -205,28 +172,6 @@ libs:
       legacy: 1
       stable: 1
       nightly: 1
-  libcuspatial:
-    name: libcuspatial
-    path: libcuspatial
-    desc: 'libcuspatial is a GPU-accelerated header-only C++ vector GIS library including binary predicates (DE-9IM), point-in-polygon, spatial join, distances, and trajectory analysis.'
-    ghlink: https://github.com/rapidsai/cuspatial
-    cllink: https://github.com/rapidsai/cuspatial/blob/main/CHANGELOG.md
-    versions:
-      # enable or disable links; 0 = disabled, 1 = enabled
-      legacy: 1
-      stable: 0
-      nightly: 0
-  libcuproj:
-    name: libcuproj
-    path: libcuproj
-    desc: 'libcuproj is a C++ header-only library for GPU-accelerated geographic and geodetic coordinate transformation library which supports projecting coordinates between coordinate reference systems (CRSes), similar to PROJ.'
-    ghlink: https://github.com/rapidsai/cuspatial/tree/main/cpp/cuproj
-    cllink: https://github.com/rapidsai/cuspatial/blob/main/CHANGELOG.md # Shares a changelog with cuSpatial
-    versions:
-      # enable or disable links; 0 = disabled, 1 = enabled
-      legacy: 1
-      stable: 0
-      nightly: 0
   libcuml:
     name: libcuml
     path: libcuml
@@ -270,3 +215,82 @@ libs:
       legacy: 1
       stable: 1
       nightly: 1
+
+# "inactive" RAPIDS projects, where docs links are preserved indefinitely but not
+# expected to be get new releases
+inactive-projects:
+  cuproj:
+    name: cuProj
+    path: cuProj
+    desc: 'cuProj is a GPU-accelerated geographic and geodetic coordinate transformation library which supports projecting coordinates between coordinate reference systems (CRSes), compatible with PyProj.'
+    ghlink: https://github.com/rapidsai/cuspatial/tree/main/python/cuproj
+    cllink: https://github.com/rapidsai/cuspatial/blob/main/CHANGELOG.md # cuProj is housed within cuSpatial so updates remain in the cuSpatial changelog
+    versions:
+      # enable or disable links; 0 = disabled, 1 = enabled
+      legacy: 1
+      stable: 1
+      nightly: 0
+    # always use these specific versions for these specific paths, regardless
+    # of the current state of RAPIDS
+    version-overrides:
+      legacy: "25.02"
+      stable: "25.04"
+  cusignal:
+    name: cusignal
+    path: cusignal
+    desc: 'cuSignal functionality has been moved to CuPy. Please see the CuPy documentation for more information.'
+    ghlink: https://github.com/cupy/cupy
+    cllink: https://docs.cupy.dev/en/latest/reference/scipy_signal.html
+    versions:
+      # enable or disable links; 0 = disabled, 1 = enabled
+      legacy: 0
+      stable: 0
+      nightly: 0
+  cuspatial:
+    name: cuSpatial
+    path: cuspatial
+    desc: 'cuSpatial is a GPU-accelerated vector GIS library including binary predicates (DE-9IM), point-in-polygon, spatial join, distances, and trajectory analysis.'
+    ghlink: https://github.com/rapidsai/cuspatial
+    cllink: https://github.com/rapidsai/cuspatial/blob/main/CHANGELOG.md
+    versions:
+      # enable or disable links; 0 = disabled, 1 = enabled
+      legacy: 1
+      stable: 1
+      nightly: 0
+    # always use these specific versions for these specific paths, regardless
+    # of the current state of RAPIDS
+    version-overrides:
+      legacy: "25.02"
+      stable: "25.04"
+  libcuproj:
+    name: libcuproj
+    path: libcuproj
+    desc: 'libcuproj is a C++ header-only library for GPU-accelerated geographic and geodetic coordinate transformation library which supports projecting coordinates between coordinate reference systems (CRSes), similar to PROJ.'
+    ghlink: https://github.com/rapidsai/cuspatial/tree/main/cpp/cuproj
+    cllink: https://github.com/rapidsai/cuspatial/blob/main/CHANGELOG.md # Shares a changelog with cuSpatial
+    versions:
+      # enable or disable links; 0 = disabled, 1 = enabled
+      legacy: 1
+      stable: 1
+      nightly: 0
+    # always use these specific versions for these specific paths, regardless
+    # of the current state of RAPIDS
+    version-overrides:
+      legacy: "25.02"
+      stable: "25.04"
+  libcuspatial:
+    name: libcuspatial
+    path: libcuspatial
+    desc: 'libcuspatial is a GPU-accelerated header-only C++ vector GIS library including binary predicates (DE-9IM), point-in-polygon, spatial join, distances, and trajectory analysis.'
+    ghlink: https://github.com/rapidsai/cuspatial
+    cllink: https://github.com/rapidsai/cuspatial/blob/main/CHANGELOG.md
+    versions:
+      # enable or disable links; 0 = disabled, 1 = enabled
+      legacy: 1
+      stable: 1
+      nightly: 0
+    # always use these specific versions for these specific paths, regardless
+    # of the current state of RAPIDS
+    version-overrides:
+      legacy: "25.02"
+      stable: "25.04"
diff --git a/_includes/api-docs.html b/_includes/api-docs.html
index da5a66cc507..cf7613ccabe 100644
--- a/_includes/api-docs.html
+++ b/_includes/api-docs.html
@@ -8,7 +8,17 @@
 {% assign versions = api.versions | sort | where_exp: "item", "item[1] == 1" | join: "" | split: "1" | reverse %}
 ### {{ api.name }}
 {{ api.desc }}
-#### DOCS {% for version_name in versions %} {% if api.name == "libucxx" %} **[{{ version_name }} ({{ site.data.releases[version_name].ucxx_version }})](/api/{{ api.path }}/{{ version_name }})** {% else %} **[{{ version_name }} ({{ site.data.releases[version_name].version }})](/api/{{ api.path }}/{{ version_name }})** {% endif %} {% unless forloop.last %}|{% endunless %} {% endfor %}
+#### DOCS {% for version_name in versions -%}
+    {%- if api.version-overrides -%}
+        **[{{ version_name }} ({{ api.version-overrides[version_name] }})](/api/{{ api.path }}/{{ version_name }})**
+    {%- elsif api.name == "libucxx" -%}
+        **[{{ version_name }} ({{ site.data.releases[version_name].ucxx_version }})](/api/{{ api.path }}/{{ version_name }})**
+    {%- else -%}
+        **[{{ version_name }} ({{ site.data.releases[version_name].version }})](/api/{{ api.path }}/{{ version_name }})**
+    {%- endif -%}
+    {%- unless forloop.last %} | {% endunless -%}
+{%- endfor %}
+
 #### LINKS {% if api.cllink %} **[changelog]({{ api.cllink }}){:target="_blank"}** | {% endif %} **[github]({{ api.ghlink }}){:target="_blank"}**
 {: .mb-7 }
 {% endif %}
diff --git a/api.md b/api.md
index e1959e0e5b9..88c8e4988bb 100644
--- a/api.md
+++ b/api.md
@@ -29,3 +29,7 @@ select the docs that fit your needs.
 ## RAPIDS Libraries
 
 {% include api-docs.html data=site.data.docs.libs %}
+
+## Inactive Projects
+
+{% include api-docs.html data=site.data.docs.inactive-projects %}
diff --git a/ci/download_from_s3.sh b/ci/download_from_s3.sh
index eaa68bf7aee..4b72289707f 100755
--- a/ci/download_from_s3.sh
+++ b/ci/download_from_s3.sh
@@ -64,9 +64,15 @@ aws_cp() {
 }
 
 # Downloads the RAPIDS libraries' documentation files from S3 and places them
-# into the "_site/api" folder. The versions that should be copied are read from
-# "_data/releases.json" and the libraries that should be copied are read from
-# "_data/docs.yml".
+# into the "_site/api" folder.
+#
+# The libraries that should be copied are read from "_data/docs.yml".
+#
+# The versions that should be copied are read from a mix of sources:
+#
+#   - active projects: "_data/releases.json"
+#   - inactive projects: 'version-overrides' field in entries in "_data/docs.yml"
+#
 download_lib_docs() {
   local DST PROJECT PROJECT_MAP \
         SRC VERSION_MAP VERSION_NAME \
@@ -78,10 +84,11 @@ download_lib_docs() {
     "nightly": { "version": .nightly.version, "ucxx_version": .nightly.ucxx_version }
   }' _data/releases.json)
 
+  echo "--- processing active RAPIDS libraries ---"
   PROJECT_MAP=$(yq '.apis + .libs' _data/docs.yml)
 
-  for VERSION_NAME in $(jq -r 'keys | .[]' <<< "$VERSION_MAP"); do
-    for PROJECT in $(yq -r 'keys | .[]' <<< "$PROJECT_MAP"); do
+  for PROJECT in $(yq -r 'keys | .[]' <<< "$PROJECT_MAP"); do
+    for VERSION_NAME in $(jq -r 'keys | .[]' <<< "$VERSION_MAP"); do
       VERSION_NUMBER=$(jq -r --arg vn "$VERSION_NAME" --arg pr "$PROJECT" '
         if ($pr | contains("ucxx")) then
           .[$vn].ucxx_version
@@ -97,7 +104,35 @@ download_lib_docs() {
 
       SRC="s3://${DOCS_BUCKET}/${PROJECT}/html/${VERSION_NUMBER}/"
       DST="$(yq -n 'env(GENERATED_DIRS)|.libs')/${PROJECT}/${VERSION_NUMBER}/"
+      aws_cp "${SRC}" "${DST}"
+    done
+  done
+
+  # inactive projects (no longer maintained, but we still host the docs)
+  echo "--- processing inactive projects ---"
+  INACTIVE_PROJECT_MAP=$(yq '.inactive-projects' _data/docs.yml)
+
+  for PROJECT in $(yq -r 'keys | .[]' <<< "$INACTIVE_PROJECT_MAP"); do
+    for VERSION_NAME in $(jq -r 'keys | .[]' <<< "$VERSION_MAP"); do
+      # do not attempt updates for any versions where the corresponding key is '0' in docs.yml
+      INACTIVE_PROJECT_MAP_JSON=$(yq -r -o json '.' <<< "$INACTIVE_PROJECT_MAP")
+      if [ "$(jq -r --arg pr "$PROJECT" --arg vn "$VERSION_NAME" '.[$pr].versions[$vn]' <<< "$INACTIVE_PROJECT_MAP_JSON")" == "0" ]; then
+        echo "Skipping: $PROJECT | $VERSION_NAME"
+        continue
+      fi
+
+      # get the version from the 'version-overrides' field in docs.yml, hard-coded there
+      # so it doesn't change from release-to-release for inactive projects
+      VERSION_NUMBER=$(
+        jq -r                               \
+          --arg vn "$VERSION_NAME"          \
+          --arg pr "${PROJECT}"             \
+          '.[$pr]."version-overrides"[$vn]' \
+        <<< "${INACTIVE_PROJECT_MAP_JSON}"
+      )
 
+      SRC="s3://${DOCS_BUCKET}/${PROJECT}/html/${VERSION_NUMBER}/"
+      DST="$(yq -n 'env(GENERATED_DIRS)|.libs')/${PROJECT}/${VERSION_NUMBER}/"
       aws_cp "${SRC}" "${DST}"
     done
   done
@@ -108,6 +143,7 @@ download_lib_docs() {
 download_deployment_docs() {
   local DST SRC VERSION
 
+  echo "--- processing deployment docs ---"
   for VERSION in nightly stable; do
     SRC="s3://${DOCS_BUCKET}/deployment/html/${VERSION}/"
     DST="$(yq -n 'env(GENERATED_DIRS)|.deployment')/${VERSION}/"