diff --git a/requirements/test/cuda.in b/requirements/test/cuda.in
index 8d7ad7d0aa2..44aa30e1d36 100644
--- a/requirements/test/cuda.in
+++ b/requirements/test/cuda.in
@@ -40,7 +40,7 @@ lm-eval[api]>=0.4.12 # required for model evaluation test
 mteb[bm25s]>=2, <3 # required for mteb test
 transformers==5.5.3
 tokenizers==0.22.2
-schemathesis>=3.39.15 # Required for openai schema test.
+schemathesis>=3.39.15,<4 # Required for openai schema test.
 # quantization
 bitsandbytes==0.49.2
 buildkite-test-collector==0.1.9
diff --git a/requirements/test/nightly-torch.txt b/requirements/test/nightly-torch.txt
index 10eb7a62191..a794f3026c5 100644
--- a/requirements/test/nightly-torch.txt
+++ b/requirements/test/nightly-torch.txt
@@ -31,7 +31,7 @@ lm-eval[api]>=0.4.12 # required for model evaluation test
 mteb[bm25s]>=2, <3 # required for mteb test
 transformers==5.5.3
 tokenizers==0.22.2
-schemathesis>=3.39.15 # Required for openai schema test.
+schemathesis>=3.39.15,<4 # Required for openai schema test.
 # quantization
 bitsandbytes>=0.49.2
 buildkite-test-collector==0.1.9
diff --git a/requirements/test/rocm.in b/requirements/test/rocm.in
index ed10270f565..d4a75bfd4cb 100644
--- a/requirements/test/rocm.in
+++ b/requirements/test/rocm.in
@@ -39,7 +39,7 @@ lm-eval[api]>=0.4.12 # required for model evaluation test
 mteb[bm25s]>=2, <3 # required for mteb test
 transformers==5.5.3
 tokenizers==0.22.2
-schemathesis>=3.39.15 # Required for openai schema test
+schemathesis>=3.39.15,<4 # Required for openai schema test
 # quantization
 bitsandbytes==0.49.2
 buildkite-test-collector==0.1.9
diff --git a/requirements/test/xpu.in b/requirements/test/xpu.in
index 161e2c6871f..0ad51eccdd8 100644
--- a/requirements/test/xpu.in
+++ b/requirements/test/xpu.in
@@ -27,7 +27,7 @@ soundfile
 blobfile
 rapidfuzz
 gpt-oss
-schemathesis
+schemathesis>=3.39.15,<4
 jiwer
 bm25s
 pystemmer