diff --git a/grpc.changes b/grpc.changes
index e251eff..8298f81 100644
--- a/grpc.changes
+++ b/grpc.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Mon Jan 29 17:25:06 UTC 2024 - Jan Engelhardt <jengelh@inai.de>
+
+- Force-replace all /usr/bin/env python by python3.
+
 -------------------------------------------------------------------
 Thu Jan 18 07:58:43 UTC 2024 - John Paul Adrian Glaubitz <adrian.glaubitz@suse.com>
 
diff --git a/grpc.spec b/grpc.spec
index 62c4161..66cf4a5 100644
--- a/grpc.spec
+++ b/grpc.spec
@@ -131,6 +131,8 @@ pushd third_party/xxhash
 %patch2 -p1
 popd
 rm -Rf third_party/abseil-cpp/
+find . -type f -exec grep -l '#!/usr/bin/env py' | \
+	xargs perl -i -lpe 's{#!/usr/bin/env py\w+}{#!/usr/bin/python3}g'
 
 # protoc is invoked strangely; make it happy with this dir or it will assert()
 mkdir -p third_party/protobuf/src