diff --git a/Gemfile b/Gemfile
index e7dffa5f72f..d75051b3db8 100644
--- a/Gemfile
+++ b/Gemfile
@@ -22,7 +22,6 @@ gem 'newrelic_rpm'
 gem 'nokogiri', '>=1.10.5'
 gem 'oj'
 gem 'openssl', '>= 3.2'
-gem 'palm_civet'
 gem 'prometheus-client'
 gem 'public_suffix'
 gem 'puma'
diff --git a/Gemfile.lock b/Gemfile.lock
index f9234801379..1a2b912bcc3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -349,7 +349,6 @@ GEM
     openssl (4.0.0)
     os (1.1.4)
     ostruct (0.6.3)
-    palm_civet (1.1.0)
     parallel (1.27.0)
     parallel_tests (5.5.0)
       parallel
@@ -660,7 +659,6 @@ DEPENDENCIES
   nokogiri (>= 1.10.5)
   oj
   openssl (>= 3.2)
-  palm_civet
   parallel_tests
   pg
   prometheus-client
@@ -705,4 +703,4 @@ DEPENDENCIES
   webrick (~> 1.9.2)
 
 BUNDLED WITH
-   2.4.19
+   2.6.9
diff --git a/lib/cloud_controller/app_manifest/byte_converter.rb b/lib/cloud_controller/app_manifest/byte_converter.rb
index fc6f8b1be46..32c0661bd74 100644
--- a/lib/cloud_controller/app_manifest/byte_converter.rb
+++ b/lib/cloud_controller/app_manifest/byte_converter.rb
@@ -1,4 +1,4 @@
-require 'palm_civet'
+require 'cloud_controller/byte_quantity'
 
 module VCAP::CloudController
   class ByteConverter
@@ -10,8 +10,8 @@ def convert_to_mb(human_readable_byte_value)
       return nil if human_readable_byte_value.blank?
       raise NonNumericError unless human_readable_byte_value.to_s.match?(/\A-?\d+(?:\.\d+)?/)
 
-      PalmCivet.to_megabytes(human_readable_byte_value.to_s)
-    rescue PalmCivet::InvalidByteQuantityError
+      ByteQuantity.to_megabytes(human_readable_byte_value.to_s)
+    rescue ByteQuantity::InvalidByteQuantityError
       raise InvalidUnitsError
     end
 
@@ -19,8 +19,8 @@ def convert_to_b(human_readable_byte_value)
       return nil if human_readable_byte_value.blank?
       raise NonNumericError unless human_readable_byte_value.to_s.match?(/\A-?\d+(?:\.\d+)?/)
 
-      PalmCivet.to_bytes(human_readable_byte_value.to_s)
-    rescue PalmCivet::InvalidByteQuantityError
+      ByteQuantity.to_bytes(human_readable_byte_value.to_s)
+    rescue ByteQuantity::InvalidByteQuantityError
       raise InvalidUnitsError
     end
 
diff --git a/lib/cloud_controller/byte_quantity.rb b/lib/cloud_controller/byte_quantity.rb
new file mode 100644
index 00000000000..6d752f2e751
--- /dev/null
+++ b/lib/cloud_controller/byte_quantity.rb
@@ -0,0 +1,92 @@
+# Derived from the palm_civet library
+# Copyright (c) 2013 Anand Gaitonde
+# Licensed under the MIT License
+# https://github.com/goodmustache/palm_civet
+
+module VCAP
+  module CloudController
+    module ByteQuantity
+      BYTE     = 1.0
+      KILOBYTE = 1024 * BYTE
+      MEGABYTE = 1024 * KILOBYTE
+      GIGABYTE = 1024 * MEGABYTE
+      TERABYTE = 1024 * GIGABYTE
+      BYTESPATTERN = /^(-?\d+(?:\.\d+)?)([KMGT]i?B?|B)$/i
+
+      class InvalidByteQuantityError < RuntimeError
+        def initialize(msg='byte quantity must be a positive integer with a unit of measurement like M, MB, MiB, G, GiB, or GB')
+          super
+        end
+      end
+
+      # Returns a human-readable byte string of the form 10M, 12.5K, and so forth.
+      # The following units are available:
+      # * T: Terabyte
+      # * G: Gigabyte
+      # * M: Megabyte
+      # * K: Kilobyte
+      # * B: Byte
+      # The unit that results in the smallest number greater than or equal to 1 is
+      # always chosen.
+      def self.byte_size(bytes)
+        raise TypeError.new('must be an integer or float') unless bytes.is_a? Numeric
+
+        case
+        when bytes >= TERABYTE
+          unit = 'T'
+          value = bytes / TERABYTE
+        when bytes >= GIGABYTE
+          unit = 'G'
+          value = bytes / GIGABYTE
+        when bytes >= MEGABYTE
+          unit = 'M'
+          value = bytes / MEGABYTE
+        when bytes >= KILOBYTE
+          unit = 'K'
+          value = bytes / KILOBYTE
+        when bytes >= BYTE
+          unit = 'B'
+          value = bytes
+        else
+          return '0'
+        end
+
+        value = sprintf('%g', sprintf('%.1f', value))
+        value << unit
+      end
+
+      # Parses a string formatted by bytes_size as bytes. Note binary-prefixed and
+      # SI prefixed units both mean a base-2 units:
+      # * KB = K = KiB	= 1024
+      # * MB = M = MiB = 1024 * K
+      # * GB = G = GiB = 1024 * M
+      # * TB = T = TiB = 1024 * G
+      def self.to_bytes(bytes)
+        matches = BYTESPATTERN.match(bytes.strip)
+        raise InvalidByteQuantityError if matches.nil?
+
+        value = Float(matches[1])
+
+        case matches[2][0].capitalize
+        when 'T'
+          value *= TERABYTE
+        when 'G'
+          value *= GIGABYTE
+        when 'M'
+          value *= MEGABYTE
+        when 'K'
+          value *= KILOBYTE
+        end
+
+        value.to_i
+      rescue TypeError
+        raise InvalidByteQuantityError
+      end
+
+      # Parses a string formatted by byte_size as megabytes.
+      def self.to_megabytes(bytes)
+        (to_bytes(bytes) / MEGABYTE).to_i
+      end
+    end
+  end
+end
diff --git a/spec/unit/lib/cloud_controller/byte_quantity_spec.rb b/spec/unit/lib/cloud_controller/byte_quantity_spec.rb
new file mode 100644
index 00000000000..bf99ae01d33
--- /dev/null
+++ b/spec/unit/lib/cloud_controller/byte_quantity_spec.rb
@@ -0,0 +1,166 @@
+# Derived from the palm_civet library
+# Copyright (c) 2013 Anand Gaitonde
+# Licensed under the MIT License
+# https://github.com/goodmustache/palm_civet
+
+require 'spec_helper'
+require 'cloud_controller/byte_quantity'
+
+module VCAP::CloudController
+  RSpec.describe ByteQuantity do
+    describe '#byte_size' do
+      it 'prints in the largest possible unit' do
+        expect(ByteQuantity.byte_size(10 * ByteQuantity::TERABYTE)).to eq('10T')
+        expect(ByteQuantity.byte_size(10.5 * ByteQuantity::TERABYTE)).to eq('10.5T')
+
+        expect(ByteQuantity.byte_size(10 * ByteQuantity::GIGABYTE)).to eq('10G')
+        expect(ByteQuantity.byte_size(10.5 * ByteQuantity::GIGABYTE)).to eq('10.5G')
+
+        expect(ByteQuantity.byte_size(100 * ByteQuantity::MEGABYTE)).to eq('100M')
+        expect(ByteQuantity.byte_size(100.5 * ByteQuantity::MEGABYTE)).to eq('100.5M')
+
+        expect(ByteQuantity.byte_size(100 * ByteQuantity::KILOBYTE)).to eq('100K')
+        expect(ByteQuantity.byte_size(100.5 * ByteQuantity::KILOBYTE)).to eq('100.5K')
+
+        expect(ByteQuantity.byte_size(1)).to eq('1B')
+      end
+
+      it "prints '0' for zero bytes" do
+        expect(ByteQuantity.byte_size(0)).to eq('0')
+      end
+
+      it 'raises a type error on non-number values' do
+        expect do
+          ByteQuantity.byte_size('something else')
+        end.to raise_error(TypeError, 'must be an integer or float')
+      end
+    end
+
+    describe '#to_bytes' do
+      it 'parses byte amounts with short units (e.g. M, G)' do
+        expect(ByteQuantity.to_bytes('5B')).to eq(5)
+        expect(ByteQuantity.to_bytes('5K')).to eq(5 * ByteQuantity::KILOBYTE)
+        expect(ByteQuantity.to_bytes('5M')).to eq(5 * ByteQuantity::MEGABYTE)
+        expect(ByteQuantity.to_bytes('5G')).to eq(5 * ByteQuantity::GIGABYTE)
+        expect(ByteQuantity.to_bytes('5T')).to eq(5 * ByteQuantity::TERABYTE)
+      end
+
+      it 'parses byte amounts that are float (e.g. 5.3KB)' do
+        expect(ByteQuantity.to_bytes('13.5KB')).to eq(13_824)
+        expect(ByteQuantity.to_bytes('4.5KB')).to eq(4608)
+        expect(ByteQuantity.to_bytes('2.55KB')).to eq(2611)
+      end
+
+      it 'parses byte amounts with long units (e.g MB, GB)' do
+        expect(ByteQuantity.to_bytes('5MB')).to eq(5 * ByteQuantity::MEGABYTE)
+        expect(ByteQuantity.to_bytes('5mb')).to eq(5 * ByteQuantity::MEGABYTE)
+        expect(ByteQuantity.to_bytes('2GB')).to eq(2 * ByteQuantity::GIGABYTE)
+        expect(ByteQuantity.to_bytes('3TB')).to eq(3 * ByteQuantity::TERABYTE)
+      end
+
+      it 'parses byte amounts with long binary units (e.g MiB, GiB)' do
+        expect(ByteQuantity.to_bytes('5MiB')).to eq(5 * ByteQuantity::MEGABYTE)
+        expect(ByteQuantity.to_bytes('5mib')).to eq(5 * ByteQuantity::MEGABYTE)
+        expect(ByteQuantity.to_bytes('2GiB')).to eq(2 * ByteQuantity::GIGABYTE)
+        expect(ByteQuantity.to_bytes('3TiB')).to eq(3 * ByteQuantity::TERABYTE)
+      end
+
+      it 'allows whitespace before and after the value' do
+        expect(ByteQuantity.to_bytes("\t\n\r 5MB ")).to eq(5 * ByteQuantity::MEGABYTE)
+      end
+
+      context 'when the byte amount is 0' do
+        it 'returns 0 bytes' do
+          expect(ByteQuantity.to_bytes('0TB')).to eq(0)
+        end
+      end
+
+      context 'when the byte amount is negative' do
+        it 'returns a negative amount of bytes' do
+          expect(ByteQuantity.to_bytes('-200B')).to eq(-200)
+        end
+      end
+
+      context 'when it raises an error' do
+        it 'raises when the unit is missing' do
+          expect do
+            ByteQuantity.to_bytes('5')
+          end.to raise_error(ByteQuantity::InvalidByteQuantityError)
+        end
+
+        it 'raises when the unit is unrecognized' do
+          expect do
+            ByteQuantity.to_bytes('5MBB')
+          end.to raise_error(ByteQuantity::InvalidByteQuantityError)
+
+          expect do
+            ByteQuantity.to_bytes('5BB')
+          end.to raise_error(ByteQuantity::InvalidByteQuantityError)
+        end
+      end
+    end
+
+    describe '#to_megabytes' do
+      it 'parses byte amounts with short units (e.g. M, G)' do
+        expect(ByteQuantity.to_megabytes('5B')).to eq(0)
+        expect(ByteQuantity.to_megabytes('5K')).to eq(0)
+        expect(ByteQuantity.to_megabytes('5M')).to eq(5)
+        expect(ByteQuantity.to_megabytes('5m')).to eq(5)
+        expect(ByteQuantity.to_megabytes('5G')).to eq(5120)
+        expect(ByteQuantity.to_megabytes('5T')).to eq(5_242_880)
+      end
+
+      it 'parses byte amounts with long units (e.g MB, GB)' do
+        expect(ByteQuantity.to_megabytes('5B')).to eq(0)
+        expect(ByteQuantity.to_megabytes('5KB')).to eq(0)
+        expect(ByteQuantity.to_megabytes('5MB')).to eq(5)
+        expect(ByteQuantity.to_megabytes('5mb')).to eq(5)
+        expect(ByteQuantity.to_megabytes('5GB')).to eq(5120)
+        expect(ByteQuantity.to_megabytes('5TB')).to eq(5_242_880)
+      end
+
+      it 'parses byte amounts with long binary units (e.g MiB, GiB)' do
+        expect(ByteQuantity.to_megabytes('5B')).to eq(0)
+        expect(ByteQuantity.to_megabytes('5KiB')).to eq(0)
+        expect(ByteQuantity.to_megabytes('5MiB')).to eq(5)
+        expect(ByteQuantity.to_megabytes('5mib')).to eq(5)
+        expect(ByteQuantity.to_megabytes('5GiB')).to eq(5120)
+        expect(ByteQuantity.to_megabytes('5TiB')).to eq(5_242_880)
+      end
+
+      it 'allows whitespace before and after the value' do
+        expect(ByteQuantity.to_megabytes("\t\n\r 5MB ")).to eq(5)
+      end
+
+      context 'when the byte amount is 0' do
+        it 'returns 0 megabytes' do
+          expect(ByteQuantity.to_megabytes('0TB')).to eq(0)
+        end
+      end
+
+      context 'when the byte amount is negative' do
+        it 'returns a negative amount of megabytes' do
+          expect(ByteQuantity.to_megabytes('-200MB')).to eq(-200)
+        end
+      end
+
+      context 'when it raises an error' do
+        it 'raises when the unit is missing' do
+          expect do
+            ByteQuantity.to_megabytes('5')
+          end.to raise_error(ByteQuantity::InvalidByteQuantityError)
+        end
+
+        it 'raises when the unit is unrecognized' do
+          expect do
+            ByteQuantity.to_megabytes('5MBB')
+          end.to raise_error(ByteQuantity::InvalidByteQuantityError)
+
+          expect do
+            ByteQuantity.to_megabytes('5BB')
+          end.to raise_error(ByteQuantity::InvalidByteQuantityError)
+        end
+      end
+    end
+  end
+end