diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f4c4e36..ba5f223 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -126,6 +126,21 @@ jobs:
       - name: Install dependencies
         run: npm ci
 
+      - name: Set version from release tag
+        run: npm version ${{ github.event.release.tag_name }} --git-tag-version=false
+
+      - name: Generate jsr.json from package.json
+        run: |
+          jq '{
+            name: .name,
+            version: .version,
+            license: .license,
+            exports: "src/index.ts"
+          }' package.json > jsr.json
+
+      - name: Publish to JSR
+        run: npx jsr publish
+
       - name: Download build artifact
         uses: actions/download-artifact@v8
         with:
@@ -136,9 +151,6 @@ jobs:
         working-directory: ./package
         run: tar -xzf cldn-ip-0.0.0-dev.tgz
 
-      - name: Set version from release tag
-        run: npm version ${{ github.event.release.tag_name }} --git-tag-version=false
-
       - name: Copy package.json to build package
         run: cp package.json package/package
 
diff --git a/src/Subnet.ts b/src/Subnet.ts
index 5b9527d..526caa4 100644
--- a/src/Subnet.ts
+++ b/src/Subnet.ts
@@ -1,5 +1,5 @@
 /*!
- * Copyright © 2024–2025 Cloudnode OÜ.
+ * Copyright © 2024–2026 Cloudnode OÜ.
  *
  * This file is part of @cldn/ip.
  *
@@ -25,7 +25,7 @@ export class Subnet<T extends IP> implements Network<T> {
   /**
    * Subnet for IPv4-mapped IPv6 addresses (`::ffff:0.0.0.0/96`).
    */
-  public static readonly IPV4_MAPPED_IPV6 = Subnet.fromCIDR(
+  public static readonly IPV4_MAPPED_IPV6: Subnet<IP> = Subnet.fromCIDR(
     "::ffff:0.0.0.0/96",
   );
 
diff --git a/src/SubnetList.ts b/src/SubnetList.ts
index 9b94e33..5407627 100644
--- a/src/SubnetList.ts
+++ b/src/SubnetList.ts
@@ -1,5 +1,5 @@
 /*!
- * Copyright © 2024–2025 Cloudnode OÜ.
+ * Copyright © 2024–2026 Cloudnode OÜ.
  *
  * This file is part of @cldn/ip.
  *
@@ -23,7 +23,7 @@ export class SubnetList implements Network {
   /**
    * A network of reserved subnets. This network does not contain publicly routable IP addresses.
    */
-  public static readonly BOGON = new SubnetList([
+  public static readonly BOGON: SubnetList = new SubnetList([
     // IPv4
     Subnet.fromCIDR("0.0.0.0/8"),
     Subnet.fromCIDR("10.0.0.0/8"),
@@ -133,7 +133,7 @@ export class SubnetList implements Network {
    * @param subnet Subnet to remove.
    * @returns Whether the subnet was found and removed.
    */
-  public remove(subnet: Subnet<IP>) {
+  public remove(subnet: Subnet<IP>): boolean {
     for (const [index, s] of this.#subnets.entries()) {
       if (s.equals(subnet)) {
         this.#subnets.splice(index, 1);