diff --git a/Cargo.lock b/Cargo.lock
index 2673d69a60..12eb0225df 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2446,15 +2446,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "memmap2"
-version = "0.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "723e3ebdcdc5c023db1df315364573789f8857c11b631a2fdfad7c00f5c046b4"
-dependencies = [
- "libc",
-]
-
 [[package]]
 name = "memmap2"
 version = "0.4.0"
@@ -4323,7 +4314,7 @@ version = "1.8.0"
 dependencies = [
  "fs_extra",
  "log 0.4.14",
- "memmap2 0.2.3",
+ "memmap2 0.4.0",
  "rand 0.7.3",
  "rayon",
  "solana-logger 1.8.0",
diff --git a/bucket_map/Cargo.toml b/bucket_map/Cargo.toml
index 5711b07988..83792708f2 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 = "0.2.3"
+memmap2 = "0.4.0"
 log = { version = "0.4.11" }
 solana-measure = { path = "../measure", version = "=1.8.0" }
 rand = "0.7.0"
diff --git a/programs/bpf/Cargo.lock b/programs/bpf/Cargo.lock
index abec636bc8..a913ad2be5 100644
--- a/programs/bpf/Cargo.lock
+++ b/programs/bpf/Cargo.lock
@@ -1487,15 +1487,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "memmap2"
-version = "0.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "723e3ebdcdc5c023db1df315364573789f8857c11b631a2fdfad7c00f5c046b4"
-dependencies = [
- "libc",
-]
-
 [[package]]
 name = "memmap2"
 version = "0.4.0"
@@ -2805,7 +2796,7 @@ version = "1.8.0"
 dependencies = [
  "fs_extra",
  "log",
- "memmap2 0.2.3",
+ "memmap2 0.4.0",
  "rand 0.7.3",
  "rayon",
  "solana-logger 1.8.0",