diff --git a/convert_kytea_model/Cargo.toml b/convert_kytea_model/Cargo.toml
index 070740d..ac5fbd0 100644
--- a/convert_kytea_model/Cargo.toml
+++ b/convert_kytea_model/Cargo.toml
@@ -7,3 +7,5 @@ edition = "2021"
 clap = { version = "4.2", features = ["derive"] }  # MIT or Apache-2.0
 vaporetto = { path = "../vaporetto", features = ["kytea"] }  # MIT or Apache-2.0
 zstd = { version = "0.13", features = ["zstdmt"] }  # MIT
+# workaround: https://github.com/gyscos/zstd-rs/issues/270
+zstd-sys = "=2.0.9"
diff --git a/evaluate/Cargo.toml b/evaluate/Cargo.toml
index 394c35c..92529b7 100644
--- a/evaluate/Cargo.toml
+++ b/evaluate/Cargo.toml
@@ -8,3 +8,5 @@ clap = { version = "4.2", features = ["derive"] }  # MIT or Apache-2.0
 vaporetto = { path = "../vaporetto" }  # MIT or Apache-2.0
 vaporetto_rules = { path = "../vaporetto_rules" }  # MIT or Apache-2.0
 zstd = "0.13"  # MIT
+# workaround: https://github.com/gyscos/zstd-rs/issues/270
+zstd-sys = "=2.0.9"
diff --git a/manipulate_model/Cargo.toml b/manipulate_model/Cargo.toml
index 1e966a2..7d2fd3b 100644
--- a/manipulate_model/Cargo.toml
+++ b/manipulate_model/Cargo.toml
@@ -9,3 +9,5 @@ csv = "1.2"  # Unlicense or MIT
 serde = { version = "1.0", features = ["derive"] }  # MIT or Apache-2.0
 vaporetto = { path = "../vaporetto" }  # MIT or Apache-2.0
 zstd = { version = "0.13", features = ["zstdmt"] }  # MIT
+# workaround: https://github.com/gyscos/zstd-rs/issues/270
+zstd-sys = "=2.0.9"
diff --git a/predict/Cargo.toml b/predict/Cargo.toml
index bebb8e5..2edcd48 100644
--- a/predict/Cargo.toml
+++ b/predict/Cargo.toml
@@ -9,3 +9,5 @@ clap = { version = "4.2", features = ["derive"] }  # MIT or Apache-2.0
 vaporetto = { path = "../vaporetto" }  # MIT or Apache-2.0
 vaporetto_rules = { path = "../vaporetto_rules" }  # MIT or Apache-2.0
 zstd = "0.13"  # MIT
+# workaround: https://github.com/gyscos/zstd-rs/issues/270
+zstd-sys = "=2.0.9"
diff --git a/train/Cargo.toml b/train/Cargo.toml
index fa145d5..5268b53 100644
--- a/train/Cargo.toml
+++ b/train/Cargo.toml
@@ -8,3 +8,5 @@ clap = { version = "4.2", features = ["derive"] }  # MIT or Apache-2.0
 vaporetto = { path = "../vaporetto", features = ["train"] }  # MIT or Apache-2.0
 vaporetto_rules = { path = "../vaporetto_rules" }  # MIT or Apache-2.0
 zstd = { version = "0.13", features = ["zstdmt"] }  # MIT
+# workaround: https://github.com/gyscos/zstd-rs/issues/270
+zstd-sys = "=2.0.9"