diff --git a/Cargo.lock b/Cargo.lock
index 62cea2e0a..4ecc58250 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -837,9 +837,9 @@ checksum = "3a3076410a55c90011c298b04d0cfa770b00fa04e1e3c97d3f6c9de105a03844"
 
 [[package]]
 name = "flatbuffers"
-version = "25.9.23"
+version = "25.12.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "09b6620799e7340ebd9968d2e0708eb82cf1971e9a16821e2091b6d6e475eed5"
+checksum = "35f6839d7b3b98adde531effaf34f0c2badc6f4735d26fe74709d8e513a96ef3"
 dependencies = [
  "bitflags 2.10.0",
  "rustc_version",
diff --git a/src/hyperlight_common/Cargo.toml b/src/hyperlight_common/Cargo.toml
index ebb5ad9bc..2f54a2f6d 100644
--- a/src/hyperlight_common/Cargo.toml
+++ b/src/hyperlight_common/Cargo.toml
@@ -15,7 +15,7 @@ Hyperlight's components common to host and guest.
 workspace = true
 
 [dependencies]
-flatbuffers = { version = "25.9.23", default-features = false }
+flatbuffers = { version = "25.12.19", default-features = false }
 anyhow = { version = "1.0.100", default-features = false }
 log = "0.4.29"
 tracing = { version = "0.1.44", optional = true }
diff --git a/src/hyperlight_guest/Cargo.toml b/src/hyperlight_guest/Cargo.toml
index 3e54dc5f2..806ee5a42 100644
--- a/src/hyperlight_guest/Cargo.toml
+++ b/src/hyperlight_guest/Cargo.toml
@@ -15,7 +15,7 @@ Provides only the essential building blocks for interacting with the host enviro
 anyhow = { version = "1.0.100", default-features = false }
 serde_json = { version = "1.0", default-features = false, features = ["alloc"] }
 hyperlight-common = { workspace = true, default-features = false }
-flatbuffers = { version= "25.9.23", default-features = false }
+flatbuffers = { version= "25.12.19", default-features = false }
 tracing = { version = "0.1.44", default-features = false, features = ["attributes"] }
 
 [target.'cfg(target_arch = "x86_64")'.dependencies]
diff --git a/src/hyperlight_guest_bin/Cargo.toml b/src/hyperlight_guest_bin/Cargo.toml
index 2049dc141..4ce3f30ee 100644
--- a/src/hyperlight_guest_bin/Cargo.toml
+++ b/src/hyperlight_guest_bin/Cargo.toml
@@ -30,7 +30,7 @@ buddy_system_allocator = "0.11.0"
 log = { version = "0.4", default-features = false }
 linkme = { version = "0.3.35", optional = true }
 spin = "0.10.0"
-flatbuffers = { version = "25.2.10", default-features = false }
+flatbuffers = { version = "25.12.19", default-features = false }
 tracing = { version = "0.1.44", default-features = false, features = ["attributes"] }
 
 [lints]
diff --git a/src/hyperlight_guest_capi/Cargo.toml b/src/hyperlight_guest_capi/Cargo.toml
index 5727fbdf2..bd580b468 100644
--- a/src/hyperlight_guest_capi/Cargo.toml
+++ b/src/hyperlight_guest_capi/Cargo.toml
@@ -16,7 +16,7 @@ hyperlight-guest = { workspace = true, default-features = false }
 hyperlight-guest-bin = { workspace = true, default-features = true }
 hyperlight-common = { workspace = true, default-features = false }
 
-flatbuffers = { version = "25.2.10", default-features = false }
+flatbuffers = { version = "25.12.19", default-features = false }
 log = { version = "0.4", default-features = false }
 
 [build-dependencies]
diff --git a/src/hyperlight_host/Cargo.toml b/src/hyperlight_host/Cargo.toml
index 71aa527b9..b8fa897fb 100644
--- a/src/hyperlight_host/Cargo.toml
+++ b/src/hyperlight_host/Cargo.toml
@@ -27,7 +27,7 @@ goblin = { version = "0.10", default-features = false, features = ["std", "elf32
 rand = { version = "0.9" }
 cfg-if = { version = "1.0.4" }
 libc = { version = "0.2.178" }
-flatbuffers = "25.9.23"
+flatbuffers = "25.12.19"
 framehop = { version = "0.15.0", optional = true }
 fallible-iterator = { version = "0.3.0", optional = true }
 blake3 = "1.8.2"