diff --git a/requirements/base.txt b/requirements/base.txt
index c1509a7dc..05b08b398 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -1,5 +1,5 @@
 pydantic
-pydantic-ai-slim[openai,anthropic,google,groq,mistral,cohere,bedrock]
+pydantic-ai-slim[mistral,cohere,bedrock,openai,anthropic,groq,google]==2.19.0
 # pydantic-ai 1.96 imports `from griffe import ...`, but griffe 2.x split into an
 # empty `griffelib` meta-package and reorganized symbols. Pin until upstream fixes.
 griffe>=1,<2