diff --git a/ruby.spec b/ruby.spec
index 19f30b2..12e138e 100644
--- a/ruby.spec
+++ b/ruby.spec
@@ -303,6 +303,11 @@ BuildRequires: zlib-devel
 %{?with_gmp:BuildRequires: gmp-devel}
 %{?with_systemtap:BuildRequires: %{_bindir}/dtrace}
 %{?with_systemtap:BuildRequires: systemtap-sdt-devel}
+# Despite pulling what we'd expect to need, there is a missing dependency
+# in systemtap, where pulling in %%{_bindir}/dtrace does not pull in also
+# the python3-pyparsing package that is required for full functionality.
+# Workaround: RHEL-86248
+%{?with_systemtap:BuildRequires: python3-pyparsing}
 %{?with_yjit:BuildRequires: %{_bindir}/rustc}
 
 # Install section