diff --git a/Cargo.lock b/Cargo.lock
index cfcbb47b57..065c2c8815 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -6687,7 +6687,7 @@ dependencies = [
  "chrono",
  "image",
  "log",
- "miniz_oxide 0.9.1",
+ "miniz_oxide 0.8.9",
  "proptest",
  "serde_json",
  "sha1 0.11.0",
@@ -6856,7 +6856,7 @@ name = "wordcraft-proof"
 version = "0.11.0"
 dependencies = [
  "log",
- "miniz_oxide 0.9.1",
+ "miniz_oxide 0.8.9",
  "proptest",
  "unicode-normalization",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 165eeb1bbd..4e5407a6a5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -59,7 +59,7 @@ craft-update = { git = "https://github.com/storytold/craft-libs", version = "=0.
 quick-xml = "0.41"
 zip = { version = "3", default-features = false, features = ["deflate"] }
 # zlib streams (compressed metafile pictures in `.doc` drawings); already in the lock as a dependency of other crates.
-miniz_oxide = "0.9"
+miniz_oxide = "0.8"
 cfb = "0.15"
 # Legacy text encodings (GBK/GB18030, Big5, Shift_JIS, EUC-KR, single-byte code pages) for plain
 # text and CSV recipient lists (#778): encoding_rs ((Apache-2.0 OR MIT) AND BSD-3-Clause) and its
diff --git a/crates/proof/Cargo.toml b/crates/proof/Cargo.toml
index 4c1a5b1121..234684a9fe 100644
--- a/crates/proof/Cargo.toml
+++ b/crates/proof/Cargo.toml
@@ -10,7 +10,7 @@ workspace = true
 
 [dependencies]
 log = { workspace = true }
-miniz_oxide = "0.9"
+miniz_oxide = "0.8"
 unicode-normalization = "0.1"
 
 [dev-dependencies]