diff --git a/Cargo.lock b/Cargo.lock
index 9f78579a1d..0b4b99e35d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -5592,7 +5592,7 @@ dependencies = [
 [[package]]
 name = "openvm-cuda-backend"
 version = "1.2.1"
-source = "git+https://github.com/openvm-org/stark-backend.git?tag=v1.2.1#dde6cdaf105cc57d1609fd49568c7bce0a066cc2"
+source = "git+https://github.com/openvm-org/stark-backend.git?branch=fix%2Ffpext-align#9fe85413c736b878fce51df66127e8f39509deea"
 dependencies = [
  "bincode 2.0.1",
  "bincode_derive",
@@ -5624,7 +5624,7 @@ dependencies = [
 [[package]]
 name = "openvm-cuda-builder"
 version = "1.2.1"
-source = "git+https://github.com/openvm-org/stark-backend.git?tag=v1.2.1#dde6cdaf105cc57d1609fd49568c7bce0a066cc2"
+source = "git+https://github.com/openvm-org/stark-backend.git?branch=fix%2Ffpext-align#9fe85413c736b878fce51df66127e8f39509deea"
 dependencies = [
  "cc",
  "glob",
@@ -5633,7 +5633,7 @@ dependencies = [
 [[package]]
 name = "openvm-cuda-common"
 version = "1.2.1"
-source = "git+https://github.com/openvm-org/stark-backend.git?tag=v1.2.1#dde6cdaf105cc57d1609fd49568c7bce0a066cc2"
+source = "git+https://github.com/openvm-org/stark-backend.git?branch=fix%2Ffpext-align#9fe85413c736b878fce51df66127e8f39509deea"
 dependencies = [
  "bytesize",
  "ctor",
@@ -6380,7 +6380,7 @@ dependencies = [
 [[package]]
 name = "openvm-stark-backend"
 version = "1.2.1"
-source = "git+https://github.com/openvm-org/stark-backend.git?tag=v1.2.1#dde6cdaf105cc57d1609fd49568c7bce0a066cc2"
+source = "git+https://github.com/openvm-org/stark-backend.git?branch=fix%2Ffpext-align#9fe85413c736b878fce51df66127e8f39509deea"
 dependencies = [
  "bitcode",
  "cfg-if",
@@ -6410,7 +6410,7 @@ dependencies = [
 [[package]]
 name = "openvm-stark-sdk"
 version = "1.2.1"
-source = "git+https://github.com/openvm-org/stark-backend.git?tag=v1.2.1#dde6cdaf105cc57d1609fd49568c7bce0a066cc2"
+source = "git+https://github.com/openvm-org/stark-backend.git?branch=fix%2Ffpext-align#9fe85413c736b878fce51df66127e8f39509deea"
 dependencies = [
  "dashmap",
  "derivative",
diff --git a/Cargo.toml b/Cargo.toml
index f65b29d76d..9dbff97f26 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -113,11 +113,11 @@ lto = "thin"
 
 [workspace.dependencies]
 # Stark Backend
-openvm-stark-backend = { git = "https://github.com/openvm-org/stark-backend.git", tag = "v1.2.1", default-features = false }
-openvm-stark-sdk = { git = "https://github.com/openvm-org/stark-backend.git", tag = "v1.2.1", default-features = false }
-openvm-cuda-backend = { git = "https://github.com/openvm-org/stark-backend.git", tag = "v1.2.1", default-features = false }
-openvm-cuda-builder = { git = "https://github.com/openvm-org/stark-backend.git", tag = "v1.2.1", default-features = false }
-openvm-cuda-common = { git = "https://github.com/openvm-org/stark-backend.git", tag = "v1.2.1", default-features = false }
+openvm-stark-backend = { git = "https://github.com/openvm-org/stark-backend.git", branch = "fix/fpext-align", default-features = false }
+openvm-stark-sdk = { git = "https://github.com/openvm-org/stark-backend.git", branch = "fix/fpext-align", default-features = false }
+openvm-cuda-backend = { git = "https://github.com/openvm-org/stark-backend.git", branch = "fix/fpext-align", default-features = false }
+openvm-cuda-builder = { git = "https://github.com/openvm-org/stark-backend.git", branch = "fix/fpext-align", default-features = false }
+openvm-cuda-common = { git = "https://github.com/openvm-org/stark-backend.git", branch = "fix/fpext-align", default-features = false }
 
 # OpenVM
 openvm-sdk = { path = "crates/sdk", default-features = false }