diff --git a/Cargo.lock b/Cargo.lock
index cb6d53918..897472181 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2442,9 +2442,9 @@ dependencies = [
 
 [[package]]
 name = "memmap2"
-version = "0.4.0"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "de5d3112c080d58ce560081baeaab7e1e864ca21795ddbf533d5b1842bb1ecf8"
+checksum = "4647a11b578fead29cdbb34d4adef8dd3dc35b876c9c6d5240d83f205abfe96e"
 dependencies = [
  "libc",
 ]
@@ -4307,7 +4307,7 @@ version = "1.8.0"
 dependencies = [
  "fs_extra",
  "log 0.4.14",
- "memmap2 0.4.0",
+ "memmap2 0.5.0",
  "rand 0.7.3",
  "rayon",
  "solana-logger 1.8.0",
@@ -4689,7 +4689,7 @@ dependencies = [
  "bv",
  "generic-array 0.14.4",
  "log 0.4.14",
- "memmap2 0.4.0",
+ "memmap2 0.5.0",
  "rustc_version 0.4.0",
  "serde",
  "serde_derive",
@@ -5407,7 +5407,7 @@ dependencies = [
  "itertools 0.10.1",
  "lazy_static",
  "log 0.4.14",
- "memmap2 0.4.0",
+ "memmap2 0.5.0",
  "num_cpus",
  "ouroboros",
  "rand 0.7.3",
@@ -5470,7 +5470,7 @@ dependencies = [
  "lazy_static",
  "libsecp256k1 0.6.0",
  "log 0.4.14",
- "memmap2 0.4.0",
+ "memmap2 0.5.0",
  "num-derive",
  "num-traits",
  "pbkdf2 0.9.0",
diff --git a/bucket_map/Cargo.toml b/bucket_map/Cargo.toml
index 83792708f..958c7edf8 100644
--- a/bucket_map/Cargo.toml
+++ b/bucket_map/Cargo.toml
@@ -14,7 +14,7 @@ edition = "2018"
 rayon = "1.5.0"
 solana-logger = { path = "../logger", version = "=1.8.0" }
 solana-sdk = { path = "../sdk", version = "=1.8.0" }
-memmap2 = "0.4.0"
+memmap2 = "0.5.0"
 log = { version = "0.4.11" }
 solana-measure = { path = "../measure", version = "=1.8.0" }
 rand = "0.7.0"
diff --git a/frozen-abi/Cargo.toml b/frozen-abi/Cargo.toml
index 4da8990a1..82cd5a451 100644
--- a/frozen-abi/Cargo.toml
+++ b/frozen-abi/Cargo.toml
@@ -22,7 +22,7 @@ thiserror = "1.0"
 [target.'cfg(not(target_arch = "bpf"))'.dependencies]
 solana-logger = { path = "../logger", version = "=1.8.0" }
 generic-array = { version = "0.14.4", default-features = false, features = ["serde", "more_lengths"]}
-memmap2 = "0.4.0"
+memmap2 = "0.5.0"
 
 [build-dependencies]
 rustc_version = "0.4"
diff --git a/programs/bpf/Cargo.lock b/programs/bpf/Cargo.lock
index 3f39476ca..89bd9278f 100644
--- a/programs/bpf/Cargo.lock
+++ b/programs/bpf/Cargo.lock
@@ -1489,9 +1489,9 @@ dependencies = [
 
 [[package]]
 name = "memmap2"
-version = "0.4.0"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "de5d3112c080d58ce560081baeaab7e1e864ca21795ddbf533d5b1842bb1ecf8"
+checksum = "4647a11b578fead29cdbb34d4adef8dd3dc35b876c9c6d5240d83f205abfe96e"
 dependencies = [
  "libc",
 ]
@@ -2796,7 +2796,7 @@ version = "1.8.0"
 dependencies = [
  "fs_extra",
  "log",
- "memmap2 0.4.0",
+ "memmap2 0.5.0",
  "rand 0.7.3",
  "rayon",
  "solana-logger 1.8.0",
@@ -2981,7 +2981,7 @@ dependencies = [
  "bv",
  "generic-array 0.14.4",
  "log",
- "memmap2 0.4.0",
+ "memmap2 0.5.0",
  "rustc_version 0.4.0",
  "serde",
  "serde_derive",
@@ -3226,7 +3226,7 @@ dependencies = [
  "itertools 0.10.1",
  "lazy_static",
  "log",
- "memmap2 0.4.0",
+ "memmap2 0.5.0",
  "num_cpus",
  "ouroboros",
  "rand 0.7.3",
@@ -3280,7 +3280,7 @@ dependencies = [
  "lazy_static",
  "libsecp256k1 0.6.0",
  "log",
- "memmap2 0.4.0",
+ "memmap2 0.5.0",
  "num-derive",
  "num-traits",
  "pbkdf2 0.9.0",
diff --git a/runtime/Cargo.toml b/runtime/Cargo.toml
index 060cd3cb9..35d87a318 100644
--- a/runtime/Cargo.toml
+++ b/runtime/Cargo.toml
@@ -24,7 +24,7 @@ fnv = "1.0.7"
 itertools = "0.10.1"
 lazy_static = "1.4.0"
 log = "0.4.14"
-memmap2 = "0.4.0"
+memmap2 = "0.5.0"
 num_cpus = "1.13.0"
 ouroboros = "0.10.1"
 rand = "0.7.0"
diff --git a/sdk/Cargo.toml b/sdk/Cargo.toml
index 46e71c107..1e561ec63 100644
--- a/sdk/Cargo.toml
+++ b/sdk/Cargo.toml
@@ -58,7 +58,7 @@ itertools =  "0.10.1"
 lazy_static = "1.4.0"
 libsecp256k1 = { version = "0.6.0", optional = true }
 log = "0.4.14"
-memmap2 = { version = "0.4.0", optional = true }
+memmap2 = { version = "0.5.0", optional = true }
 num-derive = "0.3"
 num-traits = "0.2"
 pbkdf2 = { version = "0.9.0", default-features = false }