diff --git a/Cargo.lock b/Cargo.lock
index 2bcf544d..688e66fc 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -718,7 +718,16 @@ version = "0.9.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1a8cbbb2831780bc3b9c15a41f5b49222ef756b6730a95f3decfdd15903eb5a3"
 dependencies = [
- "twox-hash",
+ "twox-hash 1.6.3",
+]
+
+[[package]]
+name = "lz4_flex"
+version = "0.11.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "373f5eceeeab7925e0c1098212f2fbc4d416adec9d35051a6ab251e824c1854a"
+dependencies = [
+ "twox-hash 2.1.2",
 ]
 
 [[package]]
@@ -934,7 +943,7 @@ dependencies = [
  "float-cmp",
  "git-version",
  "itertools",
- "lz4_flex",
+ "lz4_flex 0.9.5",
  "ndarray",
  "rustc-hash 1.1.0",
  "serde",
@@ -953,7 +962,7 @@ dependencies = [
  "float-cmp",
  "git-version",
  "itertools",
- "lz4_flex",
+ "lz4_flex 0.11.6",
  "managed-lhapdf",
  "ndarray",
  "num-complex",
@@ -1002,7 +1011,7 @@ dependencies = [
  "float-cmp",
  "git-version",
  "itertools",
- "lz4_flex",
+ "lz4_flex 0.11.6",
  "managed-lhapdf",
  "ndarray",
  "ndarray-npy",
@@ -1587,6 +1596,12 @@ dependencies = [
  "static_assertions",
 ]
 
+[[package]]
+name = "twox-hash"
+version = "2.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ea3136b675547379c4bd395ca6b938e5ad3c3d20fad76e7fe85f9e0d011419c"
+
 [[package]]
 name = "typenum"
 version = "1.17.0"
diff --git a/pineappl/Cargo.toml b/pineappl/Cargo.toml
index 6d262264..6726183e 100644
--- a/pineappl/Cargo.toml
+++ b/pineappl/Cargo.toml
@@ -24,7 +24,7 @@ enum_dispatch = "0.3.7"
 float-cmp = { default-features = false, version = "0.9.0" }
 git-version = "0.3.5"
 itertools = "0.10.1"
-lz4_flex = "0.9.2"
+lz4_flex = "0.11.6"
 ndarray = { features = ["serde"], version = "0.15.4" }
 # TODO: opt out of default features in this crate to match line above
 pineappl-v0 = { package = "pineappl", version = "0.8.2" }
diff --git a/pineappl_cli/Cargo.toml b/pineappl_cli/Cargo.toml
index 013fd071..37eaa755 100644
--- a/pineappl_cli/Cargo.toml
+++ b/pineappl_cli/Cargo.toml
@@ -27,7 +27,7 @@ float-cmp = { default-features = false, version = "0.9.0" }
 git-version = "0.3.5"
 itertools = "0.10.1"
 lhapdf = { package = "managed-lhapdf", version = "0.3.4" }
-lz4_flex = { optional = true, version = "0.9.2" }
+lz4_flex = { optional = true, version = "0.11.6" }
 ndarray = "0.15.4"
 ndarray-npy = { default-features = false, features = ["npz"], optional = true, version = "0.8.1" }
 pineappl = { path = "../pineappl", version = "=1.3.3" }