diff --git a/Makefile b/Makefile
index 1d26d8b27d..ebbe212b72 100644
--- a/Makefile
+++ b/Makefile
@@ -20,7 +20,7 @@ BENCH_OP_FLAVOR?=DEFAULT
 BENCH_TYPE?=latency
 NODE_VERSION=22.6
 BACKWARD_COMPAT_DATA_URL=https://github.com/zama-ai/tfhe-backward-compat-data.git
-BACKWARD_COMPAT_DATA_BRANCH?=v0.4
+BACKWARD_COMPAT_DATA_BRANCH?=v0.5
 BACKWARD_COMPAT_DATA_PROJECT=tfhe-backward-compat-data
 BACKWARD_COMPAT_DATA_DIR=$(BACKWARD_COMPAT_DATA_PROJECT)
 TFHE_SPEC:=tfhe
diff --git a/tests/Cargo.toml b/tests/Cargo.toml
index 3e48a73eb2..258ecbf448 100644
--- a/tests/Cargo.toml
+++ b/tests/Cargo.toml
@@ -7,7 +7,7 @@ publish = false
 [dev-dependencies]
 tfhe = { path = "../tfhe" }
 tfhe-versionable = { path = "../utils/tfhe-versionable" }
-tfhe-backward-compat-data = { git = "https://github.com/zama-ai/tfhe-backward-compat-data.git", branch = "v0.4", default-features = false, features = [
+tfhe-backward-compat-data = { git = "https://github.com/zama-ai/tfhe-backward-compat-data.git", branch = "v0.5", default-features = false, features = [
     "load",
 ] }
 ron = "0.8"