diff --git a/_includes/selector.html b/_includes/selector.html
index 026e94b0ef4..f9e5965f416 100644
--- a/_includes/selector.html
+++ b/_includes/selector.html
@@ -291,7 +291,7 @@
                     </div>
                     <div class="options-section-specific" x-show="active_packages != 'Standard'">
                         <div class="option-label"><!-- Second row of packages --></div>
-                        <template x-for="package in additional_rapids_packages">
+                        <template x-for="package in getAdditionalRapidsPackagesForRelease()">
                             <div x-on:click="(e) => packagesClickHandler(e, package)"
                                 x-bind:class="{'active': active_packages.includes(package), 'disabled': disableUnsupportedPackage(package)}"
                                 class="option" x-text="package"></div>
@@ -318,7 +318,7 @@
                     </div>
                     <div class="options-section-specific" x-show="active_packages != 'Standard'">
                         <div class="option-label"><!-- Second row of packages --></div>
-                        <template x-for="package in additional_pip_packages">
+                        <template x-for="package in getAdditionalPipPackagesForRelease()">
                             <div x-on:click="(e) => packagesClickHandler(e, package)"
                                 x-bind:class="{'active': active_packages.includes(package), 'disabled': disableUnsupportedPackage(package)}" class="option"
                                 x-text="package"></div>
@@ -395,8 +395,8 @@
             img_loc: ["NGC", "Docker Hub"],
             img_types: ["Base", "Notebooks"],
             packages: ["Standard", "Choose Specific Packages"],
-            additional_pip_packages: ["cuDF", "dask-cuDF", "cuML", "cuGraph/nx-cugraph", "cuxfilter", "cuCIM", "RAFT", "cuVS"],
-            additional_rapids_packages: ["cuDF", "cuML", "cuGraph", "cuxfilter", "cuCIM", "RAFT", "cuVS"],
+            additional_pip_packages: ["cuDF", "dask-cuDF", "cuML", "cuGraph/nx-cugraph", "cuxfilter", "cuCIM", "RAFT", "cuVS", "nvForest"],
+            additional_rapids_packages: ["cuDF", "cuML", "cuGraph", "cuxfilter", "cuCIM", "RAFT", "cuVS", "nvForest"],
             additional_packages: ["Graphistry", "JupyterLab", "NetworkX + nx-cugraph", "Plotly Dash", "PyTorch", "TensorFlow", "Xarray-Spatial"],
             note_prefix: "<i class='fas fa-info-circle text-blue'></i>",
             rapids_meta_pkgs: ["cuDF", "cuML", "cuGraph", "nx-cugraph", "cuxfilter", "cuCIM", "RAFT", "cuVS"],
@@ -406,6 +406,15 @@
             getNightlyVersion() {
                 return "{{ site.data.releases.nightly.version }}";
             },
+            // nvForest is nightly-only until the 26.04 release; exclude from package lists when Stable is selected
+            getAdditionalRapidsPackagesForRelease() {
+                if (this.active_release === "Nightly") return this.additional_rapids_packages;
+                return this.additional_rapids_packages.filter(p => p !== "nvForest");
+            },
+            getAdditionalPipPackagesForRelease() {
+                if (this.active_release === "Nightly") return this.additional_pip_packages;
+                return this.additional_pip_packages.filter(p => p !== "nvForest");
+            },
             getMethodHTML(method) {
                 var icon_class = "box-open fas";
                 if (method.includes("Docker")) icon_class = "regular fa-container-storage";
@@ -500,6 +509,12 @@
                 if (this.active_packages.length === 1 && this.active_packages[0] === "Standard") {
                     pkgs = ["rapids"];
                 }
+                if (this.active_release === "Stable") {
+                    pkgs = pkgs.filter(pkg => pkg !== "nvForest");
+                }
+                if (this.active_packages[0] === "Choose Specific Packages" && pkgs.length === 0) {
+                    return "Select at least one package.";
+                }
 
                 if (pkgs.includes("RAFT")) {
                     pkgs = pkgs.filter(pkg => pkg !== "RAFT");
@@ -582,7 +597,7 @@
                 if (this.active_packages.length === 1 && this.active_packages[0] === "Choose Specific Packages") {
                     return "Select at least one package.";
                 } else if (this.active_packages[0] === 'Standard') {
-                    var pkgs_to_show = this.additional_pip_packages;
+                    var pkgs_to_show = this.getAdditionalPipPackagesForRelease();
 
                     var pkgs = pkgs_to_show.flatMap(libraryToPkg);
 
@@ -591,9 +606,14 @@
                 } else {
                     // sort active_packages to appear in the same order as the additional_pip_packages list
                     this.active_packages.sort((a, b) => this.additional_pip_packages.indexOf(a) - this.additional_pip_packages.indexOf(b));
-                    var pkgs = this.active_packages
-                        .filter(pkg => pkg !== "Choose Specific Packages")
-                        .flatMap(libraryToPkg);
+                    var selected_pkgs = this.active_packages.filter(pkg => pkg !== "Choose Specific Packages");
+                    if (this.active_release === "Stable") {
+                        selected_pkgs = selected_pkgs.filter(pkg => pkg !== "nvForest");
+                    }
+                    var pkgs = selected_pkgs.flatMap(libraryToPkg);
+                    if (pkgs.length === 0) {
+                        return "Select at least one package.";
+                    }
                 }
 
                 // pkgs.length == 2 because it includes the "Choose Specific Packages" option
@@ -838,6 +858,11 @@
                if (!supported_pip_cuda_versions.includes(this.active_pip_cuda_ver)) {
                    this.active_pip_cuda_ver = supported_pip_cuda_versions[supported_pip_cuda_versions.length - 1];
                }
+
+               // nvForest is nightly-only; deselect it when switching to Stable
+               if (release === "Stable" && this.active_packages.includes("nvForest")) {
+                   this.active_packages = this.active_packages.filter(p => p !== "nvForest");
+               }
             },
             imgTypeClickHandler(e, type) {
                 if (this.isDisabled(e.target)) return;