diff --git a/Tests/FileFormats/RagnarokGR2.spec.lua b/Tests/FileFormats/RagnarokGR2.spec.lua
index 8ca9d891..e7bab584 100644
--- a/Tests/FileFormats/RagnarokGR2.spec.lua
+++ b/Tests/FileFormats/RagnarokGR2.spec.lua
@@ -61,7 +61,7 @@ describe("RagnarokGR2", function()
 
 				local jsonString = gr2:ToJSON()
 				assertEquals(#jsonString, expectedLength)
-				local checksum = miniz.crc32(0, jsonString)
+				local checksum = miniz.crc32(jsonString)
 				assertEquals(checksum, expectedChecksum)
 			end)
 		end
diff --git a/Tests/FileFormats/RagnarokSPR.spec.lua b/Tests/FileFormats/RagnarokSPR.spec.lua
index b6d56f07..ba97f4a8 100644
--- a/Tests/FileFormats/RagnarokSPR.spec.lua
+++ b/Tests/FileFormats/RagnarokSPR.spec.lua
@@ -32,14 +32,14 @@ describe("RagnarokSPR", function()
 			assertEquals(spr.bmpImages[1].compressedBufferSize, 6)
 			assertEquals(spr.bmpImages[1].decompressedBufferSize, 24)
 			assertEquals(#spr.bmpImages[1].pixelBuffer, 6)
-			assertEquals(miniz.crc32(0, tostring(spr.bmpImages[1].pixelBuffer)), 2180413220)
+			assertEquals(miniz.crc32(tostring(spr.bmpImages[1].pixelBuffer)), 2180413220)
 
 			assertEquals(spr.bmpImages[2].pixelWidth, 3)
 			assertEquals(spr.bmpImages[2].pixelHeight, 2)
 			assertEquals(spr.bmpImages[2].compressedBufferSize, 6)
 			assertEquals(spr.bmpImages[2].decompressedBufferSize, 24)
 			assertEquals(#spr.bmpImages[2].pixelBuffer, 6)
-			assertEquals(miniz.crc32(0, tostring(spr.bmpImages[2].pixelBuffer)), 1735309012)
+			assertEquals(miniz.crc32(tostring(spr.bmpImages[2].pixelBuffer)), 1735309012)
 		end)
 
 		it("should be able to decode SPR files using version 2.0 of the format", function()
@@ -66,19 +66,19 @@ describe("RagnarokSPR", function()
 			assertEquals(spr.bmpImages[1].compressedBufferSize, 6)
 			assertEquals(spr.bmpImages[1].decompressedBufferSize, 24)
 			assertEquals(#spr.bmpImages[1].pixelBuffer, 6)
-			assertEquals(miniz.crc32(0, tostring(spr.bmpImages[1].pixelBuffer)), 2180413220)
+			assertEquals(miniz.crc32(tostring(spr.bmpImages[1].pixelBuffer)), 2180413220)
 
 			assertEquals(spr.bmpImages[2].pixelWidth, 3)
 			assertEquals(spr.bmpImages[2].pixelHeight, 2)
 			assertEquals(spr.bmpImages[2].compressedBufferSize, 6)
 			assertEquals(spr.bmpImages[2].decompressedBufferSize, 24)
 			assertEquals(#spr.bmpImages[2].pixelBuffer, 6)
-			assertEquals(miniz.crc32(0, tostring(spr.bmpImages[2].pixelBuffer)), 1735309012)
+			assertEquals(miniz.crc32(tostring(spr.bmpImages[2].pixelBuffer)), 1735309012)
 
 			assertEquals(spr.tgaImages[1].pixelWidth, 1)
 			assertEquals(spr.tgaImages[1].pixelHeight, 4)
 			assertEquals(#spr.tgaImages[1].pixelBuffer, 16)
-			assertEquals(miniz.crc32(0, tostring(spr.tgaImages[1].pixelBuffer)), 1945965963)
+			assertEquals(miniz.crc32(tostring(spr.tgaImages[1].pixelBuffer)), 1945965963)
 		end)
 
 		it("should be able to decode SPR files using version 2.1 of the format", function()
@@ -105,19 +105,19 @@ describe("RagnarokSPR", function()
 			assertEquals(spr.bmpImages[1].compressedBufferSize, 6)
 			assertEquals(spr.bmpImages[1].decompressedBufferSize, 24)
 			assertEquals(#spr.bmpImages[1].pixelBuffer, 6)
-			assertEquals(miniz.crc32(0, tostring(spr.bmpImages[1].pixelBuffer)), 2180413220)
+			assertEquals(miniz.crc32(tostring(spr.bmpImages[1].pixelBuffer)), 2180413220)
 
 			assertEquals(spr.bmpImages[2].pixelWidth, 3)
 			assertEquals(spr.bmpImages[2].pixelHeight, 2)
 			assertEquals(spr.bmpImages[2].compressedBufferSize, 6)
 			assertEquals(spr.bmpImages[2].decompressedBufferSize, 24)
 			assertEquals(#spr.bmpImages[2].pixelBuffer, 6)
-			assertEquals(miniz.crc32(0, tostring(spr.bmpImages[2].pixelBuffer)), 552382195)
+			assertEquals(miniz.crc32(tostring(spr.bmpImages[2].pixelBuffer)), 552382195)
 
 			assertEquals(spr.tgaImages[1].pixelWidth, 1)
 			assertEquals(spr.tgaImages[1].pixelHeight, 4)
 			assertEquals(#spr.tgaImages[1].pixelBuffer, 16)
-			assertEquals(miniz.crc32(0, tostring(spr.tgaImages[1].pixelBuffer)), 1945965963)
+			assertEquals(miniz.crc32(tostring(spr.tgaImages[1].pixelBuffer)), 1945965963)
 		end)
 	end)
 
diff --git a/download-runtime.sh b/download-runtime.sh
index 6ab4b462..2db1f03a 100755
--- a/download-runtime.sh
+++ b/download-runtime.sh
@@ -2,7 +2,7 @@ set -e
 
 GITHUB_ORGANIZATION="evo-lua"
 GITHUB_REPOSITORY="evo-runtime"
-REQUIRED_RUNTIME_VERSION="v0.0.12"
+REQUIRED_RUNTIME_VERSION="v0.0.13"
 
 PLATFORM=$(uname)