diff --git a/flake.lock b/flake.lock
index 602cbcf..9dc7f8a 100644
--- a/flake.lock
+++ b/flake.lock
@@ -20,16 +20,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1737672001,
-        "narHash": "sha256-YnHJJ19wqmibLQdUeq9xzE6CjrMA568KN/lFPuSVs4I=",
+        "lastModified": 1754689972,
+        "narHash": "sha256-eogqv6FqZXHgqrbZzHnq43GalnRbLTkbBbFtEfm1RSc=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "035f8c0853c2977b24ffc4d0a42c74f00b182cd8",
+        "rev": "fc756aa6f5d3e2e5666efcf865d190701fef150a",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-24.11",
+        "ref": "nixos-25.05",
         "repo": "nixpkgs",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index 1e556c6..830b4b7 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,6 +1,6 @@
 {
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.11";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
     flake-utils.url = "github:numtide/flake-utils";
   };
 
diff --git a/stripe-concepts/changelog.md b/stripe-concepts/changelog.md
index 459c6fb..578d6aa 100644
--- a/stripe-concepts/changelog.md
+++ b/stripe-concepts/changelog.md
@@ -1,6 +1,11 @@
 Changelog
 =========
 
+1.0.3.5 - 2025-08-09
+--------------------------------------------------
+
+Support GHC 9.10, `base-21`
+
 1.0.3.4 - 2024-04-30
 --------------------------------------------------
 
diff --git a/stripe-concepts/stripe-concepts.cabal b/stripe-concepts/stripe-concepts.cabal
index 886c885..c986271 100644
--- a/stripe-concepts/stripe-concepts.cabal
+++ b/stripe-concepts/stripe-concepts.cabal
@@ -1,7 +1,7 @@
 cabal-version: 3.0
 
 name: stripe-concepts
-version: 1.0.3.4
+version: 1.0.3.5
 synopsis: Types for the Stripe API
 category: Web
 
@@ -30,6 +30,6 @@ library
         Stripe.Concepts
 
     build-depends:
-      , base ^>= 4.16 || ^>= 4.17 || ^>= 4.18 || ^>= 4.19
+      , base ^>= 4.16 || ^>= 4.17 || ^>= 4.18 || ^>= 4.19 || ^>= 4.20
       , bytestring ^>= 0.11 || ^>= 0.12
       , text ^>= 1.2.5 || ^>= 2.0 || ^>= 2.1
diff --git a/stripe-signature/changelog.md b/stripe-signature/changelog.md
index dbde0d8..bc59471 100644
--- a/stripe-signature/changelog.md
+++ b/stripe-signature/changelog.md
@@ -1,6 +1,11 @@
 Changelog
 =========
 
+1.0.1.18 - 2025-08-09
+--------------------------------------------------
+
+Support GHC 9.10, `base-21`
+
 1.0.0.17 - 2024-04-30
 --------------------------------------------------
 
diff --git a/stripe-signature/stripe-signature.cabal b/stripe-signature/stripe-signature.cabal
index 97d3486..6b36921 100644
--- a/stripe-signature/stripe-signature.cabal
+++ b/stripe-signature/stripe-signature.cabal
@@ -1,7 +1,7 @@
 cabal-version: 3.0
 
 name: stripe-signature
-version: 1.0.0.17
+version: 1.0.0.18
 synopsis: Verification of Stripe webhook signatures
 category: Web
 
@@ -27,7 +27,7 @@ common base
     default-language: GHC2021
     ghc-options: -Wall
     build-depends:
-      , base ^>= 4.16 || ^>= 4.17 || ^>= 4.18 || ^>= 4.19
+      , base ^>= 4.16 || ^>= 4.17 || ^>= 4.18 || ^>= 4.19 || ^>= 4.20
       , base16-bytestring ^>= 1.0.2
       , bytestring ^>= 0.11 || ^>= 0.12
       , cryptohash-sha256 ^>= 0.11.102
diff --git a/stripe-wreq/changelog.md b/stripe-wreq/changelog.md
index 7834a2f..f11772d 100644
--- a/stripe-wreq/changelog.md
+++ b/stripe-wreq/changelog.md
@@ -1,6 +1,11 @@
 Changelog
 =========
 
+1.0.1.18 - 2025-08-09
+--------------------------------------------------
+
+Support GHC 9.10, `base-21`
+
 1.0.1.17 - 2024-04-30
 --------------------------------------------------
 
diff --git a/stripe-wreq/stripe-wreq.cabal b/stripe-wreq/stripe-wreq.cabal
index fa2220a..6b3af5c 100644
--- a/stripe-wreq/stripe-wreq.cabal
+++ b/stripe-wreq/stripe-wreq.cabal
@@ -1,7 +1,7 @@
 cabal-version: 3.0
 
 name: stripe-wreq
-version: 1.0.1.17
+version: 1.0.1.18
 synopsis: Use the Stripe API via Wreq
 category: Web
 
@@ -33,7 +33,7 @@ library
 
     build-depends:
       , aeson ^>= 2.0.3 || ^>= 2.1 || ^>= 2.2
-      , base ^>= 4.16 || ^>= 4.17 || ^>= 4.18 || ^>= 4.19
+      , base ^>= 4.16 || ^>= 4.17 || ^>= 4.18 || ^>= 4.19 || ^>= 4.20
       , bytestring ^>= 0.11 || ^>= 0.12
       , lens ^>= 5.0.1 || ^>= 5.1 || ^>= 5.2
       , stripe-concepts ^>= 1.0.3