diff --git a/requirements.txt b/requirements.txt
index dd15a69ebf6dade1ca2fb2df0bdc3644b6b8c6d8..4953ea8f769a95b554b5de29ffb8e9614ab53d1b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 numpy
-git+git://github.com/inducer/pymbolic
+git+https://gitlab.tiker.net/inducer/pymbolic.git@deprecate-stringifier-constant-mapper
 sympy==1.1.1
 git+https://github.com/inducer/modepy
 git+https://github.com/inducer/pyopencl