diff --git a/src/template/netbsd b/src/template/netbsd
index aaa560cd92..550e8f0973 100644
--- a/src/template/netbsd
+++ b/src/template/netbsd
@@ -2,3 +2,12 @@
 
 # Extra CFLAGS for code that will go into a shared library
 CFLAGS_SL="-fPIC -DPIC"
+
+# We must resolve all dynamic linking in the core server at program start.
+# Otherwise the postmaster can self-deadlock due to signals interrupting
+# resolution of calls, since NetBSD's linker takes a lock while doing that and
+# some postmaster signal handlers do things that will also acquire that lock.
+# As long as we need "-z now", might as well specify "-z relro" too.
+# While there's not a hard reason to adopt these settings for our other
+# executables, there's also little reason not to, so just add them to LDFLAGS.
+LDFLAGS="$LDFLAGS -Wl,-z,now -Wl,-z,relro"