diff --git a/packages/std/Cargo.toml b/packages/std/Cargo.toml
index b918e127ef..b6a39fd838 100644
--- a/packages/std/Cargo.toml
+++ b/packages/std/Cargo.toml
@@ -12,7 +12,7 @@ license = "Apache-2.0"
 readme = "README.md"
 
 [package.metadata.docs.rs]
-features = ["stargate", "staking", "ibc3"]
+features = ["stargate", "staking", "ibc3", "random"]
 
 [features]
 default = []
@@ -40,6 +40,9 @@ ibc3 = ["stargate"]
 # the host blockchain to run CosmWasm `1.1.0` or higher.
 cosmwasm_1_1 = []
 
+# Add random seed to env in inits and executes
+random = []
+
 [dependencies]
 base64 = "0.13.0"
 cosmwasm-derive = { path = "../derive", version = "1.1.9" }
diff --git a/packages/std/src/exports.rs b/packages/std/src/exports.rs
index a2c986806f..86b075409f 100644
--- a/packages/std/src/exports.rs
+++ b/packages/std/src/exports.rs
@@ -29,6 +29,10 @@ use crate::serde::{from_slice, to_vec};
 use crate::types::Env;
 use crate::{CustomMsg, Deps, DepsMut, MessageInfo};
 
+#[cfg(feature = "random")]
+#[no_mangle]
+extern "C" fn requires_random() -> () {}
+
 #[cfg(feature = "iterator")]
 #[no_mangle]
 extern "C" fn requires_iterator() -> () {}
diff --git a/packages/std/src/testing/mock.rs b/packages/std/src/testing/mock.rs
index feca7fa89a..2aa611d2d6 100644
--- a/packages/std/src/testing/mock.rs
+++ b/packages/std/src/testing/mock.rs
@@ -248,6 +248,10 @@ pub fn mock_env() -> Env {
             height: 12_345,
             time: Timestamp::from_nanos(1_571_797_419_879_305_533),
             chain_id: "cosmos-testnet-14002".to_string(),
+            #[cfg(feature = "random")]
+            random: Some(
+                Binary::from_base64("wLsKdf/sYqvSMI0G0aWRjob25mrIB0VQVjTjDXnDafk=").unwrap(),
+            ),
         },
         transaction: Some(TransactionInfo { index: 3 }),
         contract: ContractInfo {
diff --git a/packages/std/src/traits.rs b/packages/std/src/traits.rs
index e97accfd17..4af1b54894 100644
--- a/packages/std/src/traits.rs
+++ b/packages/std/src/traits.rs
@@ -1,4 +1,8 @@
 use serde::{de::DeserializeOwned, Serialize};
+
+#[cfg(feature = "random")]
+use serde::Deserialize;
+
 use std::marker::PhantomData;
 use std::ops::Deref;
 
diff --git a/packages/std/src/types.rs b/packages/std/src/types.rs
index ff3a3394c6..936e84d85c 100644
--- a/packages/std/src/types.rs
+++ b/packages/std/src/types.rs
@@ -5,6 +5,9 @@ use crate::addresses::Addr;
 use crate::coin::Coin;
 use crate::timestamp::Timestamp;
 
+#[cfg(feature = "random")]
+use crate::Binary;
+
 #[derive(Serialize, Deserialize, Clone, Debug, PartialEq, Eq, JsonSchema)]
 pub struct Env {
     pub block: BlockInfo,
@@ -46,7 +49,7 @@ pub struct BlockInfo {
     /// #         height: 12_345,
     /// #         time: Timestamp::from_nanos(1_571_797_419_879_305_533),
     /// #         chain_id: "cosmos-testnet-14002".to_string(),
-    /// #     },
+    /// #      },
     /// #     transaction: Some(TransactionInfo { index: 3 }),
     /// #     contract: ContractInfo {
     /// #         address: Addr::unchecked("contract"),
@@ -55,6 +58,7 @@ pub struct BlockInfo {
     /// # };
     /// # extern crate chrono;
     /// use chrono::NaiveDateTime;
+    /// use cosmwasm_std::Binary;
     /// let seconds = env.block.time.seconds();
     /// let nsecs = env.block.time.subsec_nanos();
     /// let dt = NaiveDateTime::from_timestamp(seconds as i64, nsecs as u32);
@@ -63,6 +67,7 @@ pub struct BlockInfo {
     /// Creating a simple millisecond-precision timestamp (as used in JavaScript):
     ///
     /// ```
+    /// # use cosmwasm_std::Binary;
     /// # use cosmwasm_std::{Addr, BlockInfo, ContractInfo, Env, MessageInfo, Timestamp, TransactionInfo};
     /// # let env = Env {
     /// #     block: BlockInfo {
@@ -80,6 +85,9 @@ pub struct BlockInfo {
     /// ```
     pub time: Timestamp,
     pub chain_id: String,
+    #[cfg(feature = "random")]
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub random: Option<Binary>,
 }
 
 /// Additional information from [MsgInstantiateContract] and [MsgExecuteContract], which is passed