diff --git a/build_npm.ts b/build_npm.ts
index 7be7d57..cc77273 100644
--- a/build_npm.ts
+++ b/build_npm.ts
@@ -9,7 +9,6 @@ await build({
   outDir,
   shims: { deno: true },
   package: {
-    dependencies: { "@types/sjcl": "1.0.34" },
     name: "gamla",
     version: Deno.args[0],
     description: "Functional programming with async and type safety",
diff --git a/deno.json b/deno.json
index 43a92a4..7c24207 100644
--- a/deno.json
+++ b/deno.json
@@ -2,7 +2,5 @@
   "tasks": {
     "build": "deno run --allow-env --allow-read --allow-write --allow-net --allow-run build_npm.ts"
   },
-  "imports": {
-    "std-assert": "https://deno.land/std@0.213.0/assert/mod.ts"
-  }
+  "imports": { "std-assert": "https://deno.land/std@0.213.0/assert/mod.ts" }
 }
diff --git a/deno.lock b/deno.lock
index 150fa35..9aba92b 100644
--- a/deno.lock
+++ b/deno.lock
@@ -20,6 +20,7 @@
     "jsr:@std/path@~0.225.2": "0.225.2",
     "jsr:@ts-morph/bootstrap@0.24": "0.24.0",
     "jsr:@ts-morph/common@0.24": "0.24.0",
+    "npm:js-sha256@*": "0.11.0",
     "npm:sjcl@*": "1.0.8",
     "npm:stable-hash@*": "0.0.4"
   },
@@ -117,6 +118,9 @@
     }
   },
   "npm": {
+    "js-sha256@0.11.0": {
+      "integrity": "sha512-6xNlKayMZvds9h1Y1VWc0fQHQ82BxTXizWPEtEeGvmOUYpBRy4gbWroHLpzowe6xiQhHpelCQiE7HEdznyBL9Q=="
+    },
     "sjcl@1.0.8": {
       "integrity": "sha512-LzIjEQ0S0DpIgnxMEayM1rq9aGwGRG4OnZhCdjx7glTaJtf4zRfpg87ImfjSJjoW9vKpagd82McDOwbRT5kQKQ=="
     },
@@ -124,6 +128,9 @@
       "integrity": "sha512-LjdcbuBeLcdETCrPn9i8AYAZ1eCtu4ECAWtP7UleOiZ9LzVxRzzUZEoZ8zB24nhkQnDWyET0I+3sWokSDS3E7g=="
     }
   },
+  "redirects": {
+    "https://denopkg.com/chiefbiiko/std-encoding/mod.ts": "https://denopkg.com/chiefbiiko/std-encoding@master/mod.ts"
+  },
   "remote": {
     "https://deno.land/std@0.140.0/_util/assert.ts": "e94f2eb37cebd7f199952e242c77654e43333c1ac4c5c700e929ea3aa5489f74",
     "https://deno.land/std@0.140.0/_util/os.ts": "3b4c6e27febd119d36a416d7a97bd3b0251b77c88942c8f16ee5953ea13e2e49",
@@ -194,6 +201,9 @@
     "https://deno.land/std@0.213.0/assert/unreachable.ts": "38cfecb95d8b06906022d2f9474794fca4161a994f83354fd079cac9032b5145",
     "https://deno.land/std@0.213.0/fmt/colors.ts": "aeaee795471b56fc62a3cb2e174ed33e91551b535f44677f6320336aabb54fbb",
     "https://deno.land/std@0.213.0/testing/mock.ts": "4c35c9bc7d63cabceadf8fa1d0771104d754352c54054e11e068f9af08821234",
+    "https://deno.land/x/base64@v0.2.1/base.ts": "47dc8d68f07dc91524bdd6db36eccbe59cf4d935b5fc09f27357a3944bb3ff7b",
+    "https://deno.land/x/base64@v0.2.1/base64url.ts": "18bbf879b31f1f32cca8adaa2b6885ae325c2cec6a66c5817b684ca12c46ad5e",
+    "https://deno.land/x/base64@v0.2.1/mod.ts": "1cbdc4ba7229d3c6d1763fecdb9d46844777c7e153abb6dabea8b0dd01448db4",
     "https://deno.land/x/code_block_writer@12.0.0/mod.ts": "2c3448060e47c9d08604c8f40dee34343f553f33edcdfebbf648442be33205e5",
     "https://deno.land/x/code_block_writer@12.0.0/utils/string_utils.ts": "60cb4ec8bd335bf241ef785ccec51e809d576ff8e8d29da43d2273b69ce2a6ff",
     "https://deno.land/x/deno_cache@0.6.2/auth_tokens.ts": "5d1d56474c54a9d152e44d43ea17c2e6a398dd1e9682c69811a313567c01ee1e",
@@ -237,6 +247,8 @@
     "https://deno.land/x/wasmbuild@0.14.1/cache.ts": "89eea5f3ce6035a1164b3e655c95f21300498920575ade23161421f5b01967f4",
     "https://deno.land/x/wasmbuild@0.14.1/loader.ts": "d98d195a715f823151cbc8baa3f32127337628379a02d9eb2a3c5902dbccfc02",
     "https://deno.land/x/wasmbuild@0.15.1/cache.ts": "9d01b5cb24e7f2a942bbd8d14b093751fa690a6cde8e21709ddc97667e6669ed",
-    "https://deno.land/x/wasmbuild@0.15.1/loader.ts": "8c2fc10e21678e42f84c5135d8ab6ab7dc92424c3f05d2354896a29ccfd02a63"
+    "https://deno.land/x/wasmbuild@0.15.1/loader.ts": "8c2fc10e21678e42f84c5135d8ab6ab7dc92424c3f05d2354896a29ccfd02a63",
+    "https://denopkg.com/chiefbiiko/sha256@v1.0.0/mod.ts": "eca3d13a2cd11839e451055737ccde0c7c6cdbd331fcd0a8f7e954ee857bb13a",
+    "https://denopkg.com/chiefbiiko/std-encoding@master/mod.ts": "e61017da4cef146863d614a961b4e61f1df14b72c906092bd02161f913e76522"
   }
 }
diff --git a/src/io.ts b/src/io.ts
index f1c78a2..b27e4ce 100644
--- a/src/io.ts
+++ b/src/io.ts
@@ -1,4 +1,4 @@
-import sjcl from "npm:sjcl";
+import { sha256 } from "npm:js-sha256";
 import stableHash from "npm:stable-hash";
 import { pipe } from "./composition.ts";
 import { juxt, pairRight, stack } from "./juxt.ts";
@@ -169,8 +169,6 @@ export const retry = <F extends AsyncFunction>(
   f: F,
 ) => conditionalRetry(() => true)(waitMs, times, f);
 
-const sha256 = (x: string) => sjcl.codec.hex.fromBits(sjcl.hash.sha256.hash(x));
-
 export const hash = <T>(x: T, maxLength: number) =>
   // @ts-ignore-error error in deno but not in node
-  sha256(stableHash(x)).substring(0, maxLength);
+  sha256.hex(stableHash(x)).substring(0, maxLength);