diff --git a/.evergreen/ocsp/mock-ocsp-responder-requirements.txt b/.evergreen/ocsp/mock-ocsp-responder-requirements.txt
index c1e44689..70e5715d 100644
--- a/.evergreen/ocsp/mock-ocsp-responder-requirements.txt
+++ b/.evergreen/ocsp/mock-ocsp-responder-requirements.txt
@@ -4,5 +4,5 @@ flask==2.2.5
 itsdangerous==2.1.2
 Jinja2==3.1.4
 MarkupSafe==2.1.4
-oscrypto==1.3.0
+git+https://github.com/wbond/oscrypto.git@d5f3437
 Werkzeug==3.0.3