diff --git a/Cargo.lock b/Cargo.lock
index 115a1dd3d..a9980311d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3265,6 +3265,7 @@ dependencies = [
  "tower",
  "tower-http",
  "tracing",
+ "wasmer",
 ]
 
 [[package]]
diff --git a/packages/fuel-indexer-api-server/Cargo.toml b/packages/fuel-indexer-api-server/Cargo.toml
index 6bb1cf2f1..9d1657746 100644
--- a/packages/fuel-indexer-api-server/Cargo.toml
+++ b/packages/fuel-indexer-api-server/Cargo.toml
@@ -42,6 +42,7 @@ tokio = { workspace = true, features = ["macros", "rt-multi-thread"] }
 tower = { version = "0.4", features = ["limit", "buffer"] }
 tower-http = { version = "0.3", features = ["fs", "trace", "cors", "limit"] }
 tracing = { workspace = true }
+wasmer = "4"
 
 [features]
 default = ["metrics"]
diff --git a/packages/fuel-indexer-api-server/src/api.rs b/packages/fuel-indexer-api-server/src/api.rs
index bd772bb93..81ad78bc6 100644
--- a/packages/fuel-indexer-api-server/src/api.rs
+++ b/packages/fuel-indexer-api-server/src/api.rs
@@ -103,6 +103,11 @@ pub enum ApiError {
     SqlValidator(#[from] crate::sql::SqlValidatorError),
     #[error("ParseError: {0:?}")]
     ParseError(#[from] strum::ParseError),
+    #[error("The forc-index version {toolchain_version} does not match the fuel-indexer version {fuel_indexer_version}.")]
+    ToolchainVersionMismatch {
+        toolchain_version: String,
+        fuel_indexer_version: String,
+    },
     #[error("Other error: {0}")]
     OtherError(String),
 }
@@ -168,6 +173,9 @@ impl IntoResponse for ApiError {
                 // This is currently the only type of ParseError on the web server
                 (StatusCode::BAD_REQUEST, format!("Invalid asset type: {e}"))
             }
+            ApiError::ToolchainVersionMismatch{fuel_indexer_version, toolchain_version} => {
+                (StatusCode::METHOD_NOT_ALLOWED, format!("The toolchain version {toolchain_version} that the WASM module was compiled with does not match the fuel-indexer-versiion {fuel_indexer_version}"))
+            }
             _ => (StatusCode::INTERNAL_SERVER_ERROR, generic_details),
         };
 
diff --git a/packages/fuel-indexer-api-server/src/ffi.rs b/packages/fuel-indexer-api-server/src/ffi.rs
new file mode 100644
index 000000000..0f77f6a64
--- /dev/null
+++ b/packages/fuel-indexer-api-server/src/ffi.rs
@@ -0,0 +1,48 @@
+use wasmer::{AsStoreMut, Instance, MemoryView, StoreMut, WasmPtr};
+
+pub(crate) fn check_wasm_toolchain_version(data: Vec<u8>) -> anyhow::Result<String> {
+    let mut store = wasmer::Store::default();
+
+    let module = wasmer::Module::new(&store, data.clone())?;
+
+    let imports = wasmer::imports! {};
+
+    let instance = wasmer::Instance::new(&mut store, &module, &imports)?;
+
+    let version = get_toolchain_version(&mut store.as_store_mut(), &instance)?;
+
+    Ok(version)
+}
+
+/// Get the toolchain version stored in the WASM module.
+pub fn get_toolchain_version(
+    store: &mut StoreMut,
+    instance: &Instance,
+) -> anyhow::Result<String> {
+    let exports = &instance.exports;
+
+    let ptr = exports
+        .get_function("get_toolchain_version_ptr")?
+        .call(store, &[])?[0]
+        .i32()
+        .ok_or_else(|| anyhow::anyhow!("get_toolchain_version_ptr".to_string()))?
+        as u32;
+
+    let len = exports
+        .get_function("get_toolchain_version_len")?
+        .call(store, &[])?[0]
+        .i32()
+        .ok_or_else(|| anyhow::anyhow!("get_toolchain_version_len".to_string()))?
+        as u32;
+
+    let memory = exports.get_memory("memory")?.view(store);
+    let version = get_string(&memory, ptr, len)?;
+
+    Ok(version)
+}
+
+/// Fetch the string at the given pointer from memory.
+fn get_string(mem: &MemoryView, ptr: u32, len: u32) -> anyhow::Result<String> {
+    let result = WasmPtr::<u8>::new(ptr).read_utf8_string(mem, len)?;
+    Ok(result)
+}
diff --git a/packages/fuel-indexer-api-server/src/lib.rs b/packages/fuel-indexer-api-server/src/lib.rs
index 9d510690c..e3ade4b2a 100644
--- a/packages/fuel-indexer-api-server/src/lib.rs
+++ b/packages/fuel-indexer-api-server/src/lib.rs
@@ -3,6 +3,7 @@
 pub mod api;
 pub mod cli;
 pub(crate) mod commands;
+pub(crate) mod ffi;
 pub(crate) mod middleware;
 pub(crate) mod models;
 pub(crate) mod sql;
diff --git a/packages/fuel-indexer-api-server/src/uses.rs b/packages/fuel-indexer-api-server/src/uses.rs
index e0f28ecf1..323f36793 100644
--- a/packages/fuel-indexer-api-server/src/uses.rs
+++ b/packages/fuel-indexer-api-server/src/uses.rs
@@ -221,9 +221,18 @@ pub(crate) async fn register_indexer_assets(
 
     let multipart = multipart.ok_or_else(ApiError::default)?;
 
-    let (replace_indexer, asset_bytes) =
+    let (toolchain_version, replace_indexer, asset_bytes) =
         parse_register_indexer_multipart(multipart).await?;
 
+    let fuel_indexer_version = env!("CARGO_PKG_VERSION").to_string();
+
+    if toolchain_version != fuel_indexer_version {
+        return Err(ApiError::ToolchainVersionMismatch {
+            toolchain_version,
+            fuel_indexer_version,
+        });
+    }
+
     queries::start_transaction(&mut conn).await?;
 
     let result = register_indexer_assets_transaction(
@@ -374,7 +383,8 @@ async fn register_indexer_assets_transaction(
 // schema, and the WASM module.
 async fn parse_register_indexer_multipart(
     mut multipart: Multipart,
-) -> ApiResult<(bool, Vec<(IndexerAssetType, Vec<u8>)>)> {
+) -> ApiResult<(String, bool, Vec<(IndexerAssetType, Vec<u8>)>)> {
+    let mut toolchain_version: String = "unknown".to_string();
     let mut replace_indexer: bool = false;
     let mut assets: Vec<(IndexerAssetType, Vec<u8>)> = vec![];
 
@@ -390,12 +400,17 @@ async fn parse_register_indexer_multipart(
             }
             name => {
                 let asset_type = IndexerAssetType::from_str(name)?;
+                if asset_type == IndexerAssetType::Wasm {
+                    toolchain_version =
+                        crate::ffi::check_wasm_toolchain_version(data.clone().into())
+                            .unwrap_or("none".to_string());
+                };
                 assets.push((asset_type, data.to_vec()));
             }
         };
     }
 
-    Ok((replace_indexer, assets))
+    Ok((toolchain_version, replace_indexer, assets))
 }
 
 /// Return a `Nonce` to be used for authentication.
diff --git a/packages/fuel-indexer-macros/src/schema.rs b/packages/fuel-indexer-macros/src/schema.rs
index 366438e83..6192b3706 100644
--- a/packages/fuel-indexer-macros/src/schema.rs
+++ b/packages/fuel-indexer-macros/src/schema.rs
@@ -59,10 +59,14 @@ pub(crate) fn process_graphql_schema(
 
     let version_tokens = const_item("VERSION", schema.version());
 
+    let toolchain_version_tokens =
+        const_item("TOOLCHAIN_VERSION", env!("CARGO_PKG_VERSION"));
+
     let mut output = quote! {
         #namespace_tokens
         #identifer_tokens
         #version_tokens
+        #toolchain_version_tokens
     };
 
     let schema =
diff --git a/packages/fuel-indexer-tests/indexers/simple-wasm/simple_wasm.wasm b/packages/fuel-indexer-tests/indexers/simple-wasm/simple_wasm.wasm
index e69de29bb..308990475 100644
Binary files a/packages/fuel-indexer-tests/indexers/simple-wasm/simple_wasm.wasm and b/packages/fuel-indexer-tests/indexers/simple-wasm/simple_wasm.wasm differ
diff --git a/packages/fuel-indexer/src/ffi.rs b/packages/fuel-indexer/src/ffi.rs
index d0955a555..f0a9fb4cb 100644
--- a/packages/fuel-indexer/src/ffi.rs
+++ b/packages/fuel-indexer/src/ffi.rs
@@ -35,7 +35,7 @@ pub enum FFIError {
     None(String),
 }
 
-/// Get the version of the indexer schema stored in the WASM instance.
+/// Get the version of the indexer schema stored in the WASM module.
 pub fn get_version(store: &mut StoreMut, instance: &Instance) -> FFIResult<String> {
     let exports = &instance.exports;