diff --git a/Cargo.lock b/Cargo.lock
index 097c9d88..a09f224f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -298,9 +298,9 @@ checksum = "4b46cbb362ab8752921c97e041f5e366ee6297bd428a31275b9fcf1e380f7299"
 
 [[package]]
 name = "anstream"
-version = "0.5.0"
+version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b1f58811cfac344940f1a400b6e6231ce35171f614f26439e80f8c1465c5cc0c"
+checksum = "bff2cf94a3dbe2d57cbd56485e1bd7436455058034d6c2d47be51d4e5e4bc6ab"
 dependencies = [
  "anstyle",
  "anstyle-parse",
@@ -312,15 +312,15 @@ dependencies = [
 
 [[package]]
 name = "anstyle"
-version = "1.0.3"
+version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b84bf0a05bbb2a83e5eb6fa36bb6e87baa08193c35ff52bbf6b38d8af2890e46"
+checksum = "7079075b41f533b8c61d2a4d073c4676e1f8b249ff94a393b0595db304e0dd87"
 
 [[package]]
 name = "anstyle-parse"
-version = "0.2.1"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "938874ff5980b03a87c5524b3ae5b59cf99b1d6bc836848df7bc5ada9643c333"
+checksum = "317b9a89c1868f5ea6ff1d9539a69f45dffc21ce321ac1fd1160dfa48c8e2140"
 dependencies = [
  "utf8parse",
 ]
@@ -336,9 +336,9 @@ dependencies = [
 
 [[package]]
 name = "anstyle-wincon"
-version = "2.1.0"
+version = "3.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "58f54d10c6dfa51283a066ceab3ec1ab78d13fae00aa49243a45e4571fb79dfd"
+checksum = "0238ca56c96dfa37bdf7c373c8886dd591322500aceeeccdb2216fe06dc2f796"
 dependencies = [
  "anstyle",
  "windows-sys",
@@ -614,9 +614,9 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "4.4.5"
+version = "4.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "824956d0dca8334758a5b7f7e50518d66ea319330cbceedcf76905c2f6ab30e3"
+checksum = "d04704f56c2cde07f43e8e2c154b43f216dc5c92fc98ada720177362f953b956"
 dependencies = [
  "clap_builder",
  "clap_derive",
@@ -624,9 +624,9 @@ dependencies = [
 
 [[package]]
 name = "clap_builder"
-version = "4.4.5"
+version = "4.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "122ec64120a49b4563ccaedcbea7818d069ed8e9aa6d829b82d8a4128936b2ab"
+checksum = "0e231faeaca65ebd1ea3c737966bf858971cd38c3849107aa3ea7de90a804e45"
 dependencies = [
  "anstream",
  "anstyle",
diff --git a/martin-mbtiles/src/mbtiles.rs b/martin-mbtiles/src/mbtiles.rs
index b37cbd8d..add902fe 100644
--- a/martin-mbtiles/src/mbtiles.rs
+++ b/martin-mbtiles/src/mbtiles.rs
@@ -564,7 +564,8 @@ where
     let query = query(
         // The md5_concat func will return NULL if there are no rows in the tiles table.
         // For our use case, we will treat it as an empty string, and hash that.
-        // Note that in some weird rare cases, a column with blob type may be stored as an integer value
+        // `tile_data` values must be stored as a blob per MBTiles spec
+        // `md5` functions will fail if the value is not text/blob/null
         "SELECT
          hex(
            coalesce(
@@ -572,7 +573,7 @@ where
                cast(zoom_level AS text),
                cast(tile_column AS text),
                cast(tile_row AS text),
-               cast(tile_data as blob)
+               tile_data
              ),
              md5('')
            )
diff --git a/tests/fixtures/files/world_cities_diff.mbtiles b/tests/fixtures/files/world_cities_diff.mbtiles
index 275f3316..bcb123d9 100644
Binary files a/tests/fixtures/files/world_cities_diff.mbtiles and b/tests/fixtures/files/world_cities_diff.mbtiles differ
diff --git a/tests/fixtures/files/world_cities_modified.mbtiles b/tests/fixtures/files/world_cities_modified.mbtiles
index 82fa5564..e6d104bf 100644
Binary files a/tests/fixtures/files/world_cities_modified.mbtiles and b/tests/fixtures/files/world_cities_modified.mbtiles differ