diff --git a/Cargo.lock b/Cargo.lock
index 5cc0aa70..47cc741a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1165,7 +1165,7 @@ dependencies = [
  "cosmwasm-std",
  "prost 0.12.6",
  "prost-types 0.12.6",
- "protobuf 3.5.0",
+ "protobuf 3.4.0",
  "schemars",
  "serde",
  "serde-json-wasm 1.0.1",
@@ -1186,7 +1186,7 @@ dependencies = [
  "cosmwasm-std",
  "prost 0.12.6",
  "prost-types 0.12.6",
- "protobuf 3.5.0",
+ "protobuf 3.4.0",
  "schemars",
  "serde",
  "serde-json-wasm 1.0.1",
@@ -1379,9 +1379,9 @@ dependencies = [
 
 [[package]]
 name = "protobuf"
-version = "3.5.0"
+version = "3.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "df67496db1a89596beaced1579212e9b7c53c22dca1d9745de00ead76573d514"
+checksum = "58678a64de2fced2bdec6bca052a6716a0efe692d6e3f53d1bda6a1def64cfc0"
 dependencies = [
  "bytes",
  "once_cell",
@@ -1391,9 +1391,9 @@ dependencies = [
 
 [[package]]
 name = "protobuf-support"
-version = "3.5.0"
+version = "3.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "70e2d30ab1878b2e72d1e2fc23ff5517799c9929e2cf81a8516f9f4dcf2b9cf3"
+checksum = "e1ed294a835b0f30810e13616b1cd34943c6d1e84a8f3b0dcfe466d256c3e7e7"
 dependencies = [
  "thiserror",
 ]
@@ -2087,7 +2087,7 @@ dependencies = [
  "osmosis-std-derive",
  "prost 0.11.9",
  "prost-types 0.11.9",
- "protobuf 3.5.0",
+ "protobuf 3.4.0",
  "schemars",
  "serde",
  "uint",
diff --git a/Cargo.toml b/Cargo.toml
index 6a93dfee..486af758 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -49,6 +49,8 @@ skip             = { version = "0.3.0", path = "./packages/skip" }
 test-case        = "3.3.1"
 thiserror        = "1"
 white-whale-std  = "1.1.1"
+protobuf = "=3.4.0"
+protobuf-support = "=3.4.0"
 
 [profile.release]
 codegen-units    = 1