diff --git a/Libraries/LibCrypto/CMakeLists.txt b/Libraries/LibCrypto/CMakeLists.txt
index 4277f33db6b..06248104ac3 100644
--- a/Libraries/LibCrypto/CMakeLists.txt
+++ b/Libraries/LibCrypto/CMakeLists.txt
@@ -17,7 +17,6 @@ set(SOURCES
     BigInt/SignedBigInteger.cpp
     BigInt/UnsignedBigInteger.cpp
     Certificate/Certificate.cpp
-    Checksum/Adler32.cpp
     Checksum/cksum.cpp
     Checksum/CRC32.cpp
     Cipher/AES.cpp
diff --git a/Libraries/LibCrypto/Checksum/Adler32.cpp b/Libraries/LibCrypto/Checksum/Adler32.cpp
deleted file mode 100644
index eaff83f7d3c..00000000000
--- a/Libraries/LibCrypto/Checksum/Adler32.cpp
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
-
-#include <AK/Span.h>
-#include <AK/Types.h>
-#include <LibCrypto/Checksum/Adler32.h>
-
-namespace Crypto::Checksum {
-
-void Adler32::update(ReadonlyBytes data)
-{
-    // See https://github.com/SerenityOS/serenity/pull/24408#discussion_r1609051678
-    constexpr size_t iterations_without_overflow = 380368439;
-
-    u64 state_a = m_state_a;
-    u64 state_b = m_state_b;
-    while (data.size()) {
-        // You can verify that no overflow will happen here during at least
-        // `iterations_without_overflow` iterations using the following Python script:
-        //
-        // state_a = 65520
-        // state_b = 65520
-        // for i in range(380368439):
-        //     state_a += 255
-        //     state_b += state_a
-        // print(state_b < 2 ** 64)
-        auto chunk = data.slice(0, min(data.size(), iterations_without_overflow));
-        for (u8 byte : chunk) {
-            state_a += byte;
-            state_b += state_a;
-        }
-        state_a %= 65521;
-        state_b %= 65521;
-        data = data.slice(chunk.size());
-    }
-    m_state_a = state_a;
-    m_state_b = state_b;
-}
-
-u32 Adler32::digest()
-{
-    return (m_state_b << 16) | m_state_a;
-}
-
-}
diff --git a/Libraries/LibCrypto/Checksum/Adler32.h b/Libraries/LibCrypto/Checksum/Adler32.h
deleted file mode 100644
index 1f0292c0208..00000000000
--- a/Libraries/LibCrypto/Checksum/Adler32.h
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- * Copyright (c) 2020-2022, the SerenityOS developers.
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
-
-#pragma once
-
-#include <AK/Span.h>
-#include <AK/Types.h>
-#include <LibCrypto/Checksum/ChecksumFunction.h>
-
-namespace Crypto::Checksum {
-
-class Adler32 : public ChecksumFunction<u32> {
-public:
-    Adler32() = default;
-    Adler32(ReadonlyBytes data)
-    {
-        update(data);
-    }
-
-    Adler32(u32 initial_a, u32 initial_b, ReadonlyBytes data)
-        : m_state_a(initial_a)
-        , m_state_b(initial_b)
-    {
-        update(data);
-    }
-
-    virtual void update(ReadonlyBytes data) override;
-    virtual u32 digest() override;
-
-private:
-    u32 m_state_a { 1 };
-    u32 m_state_b { 0 };
-};
-
-}
diff --git a/Tests/LibCrypto/TestChecksum.cpp b/Tests/LibCrypto/TestChecksum.cpp
index 93b370a1330..2c5574266b3 100644
--- a/Tests/LibCrypto/TestChecksum.cpp
+++ b/Tests/LibCrypto/TestChecksum.cpp
@@ -4,25 +4,10 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include <LibCrypto/Checksum/Adler32.h>
 #include <LibCrypto/Checksum/CRC32.h>
 #include <LibCrypto/Checksum/cksum.h>
 #include <LibTest/TestCase.h>
 
-TEST_CASE(test_adler32)
-{
-    auto do_test = [](ReadonlyBytes input, u32 expected_result) {
-        auto digest = Crypto::Checksum::Adler32(input).digest();
-        EXPECT_EQ(digest, expected_result);
-    };
-
-    do_test(""sv.bytes(), 0x1);
-    do_test("a"sv.bytes(), 0x00620062);
-    do_test("abc"sv.bytes(), 0x024d0127);
-    do_test("message digest"sv.bytes(), 0x29750586);
-    do_test("abcdefghijklmnopqrstuvwxyz"sv.bytes(), 0x90860b20);
-}
-
 TEST_CASE(test_cksum)
 {
     auto do_test = [](ReadonlyBytes input, u32 expected_result) {