diff --git a/pkgs/by-name/ju/judy/fix-source-date.patch b/pkgs/by-name/ju/judy/fix-source-date.patch
new file mode 100644
index 000000000000..0a663d787d4c
--- /dev/null
+++ b/pkgs/by-name/ju/judy/fix-source-date.patch
@@ -0,0 +1,25 @@
+diff -Naur judy-1.0.5.orig/jhton.c judy-1.0.5/jhton.c
+--- judy-1.0.5.orig/tool/jhton.c	2025-03-29 18:37:09
++++ judy-1.0.5/tool/jhton.c	2025-03-29 18:40:47
+@@ -674,7 +674,6 @@
+ 	char *	pagesection;		// such as "3X".
+ 	char	lcletter;		// manual tab section, such as "j".
+ 	char *	revision;		// from centered table datum.
+-	time_t	currtime;		// for ctime().
+ 
+ // Extract "weird" header values:
+ //
+@@ -690,11 +689,8 @@
+ 		  "contain revision information");
+ 	}
+ 
+-// Emit file header; note, ctime() output already contains a newline:
+-
+-	(void) time(&currtime);
+-	(void) printf(".\\\" Auto-translated to nroff -man from %s by %s at %s",
+-		      Filename, gc_myname, ctime(&currtime));
++	(void) printf(".\\\" Auto-translated to nroff -man from %s by %s\n",
++		      Filename, gc_myname);
+ 
+ 	(void) printf(".\\\" %s\n",  filerev);
+ 	(void) printf(".TA %c\n",    lcletter);
diff --git a/pkgs/by-name/ju/judy/package.nix b/pkgs/by-name/ju/judy/package.nix
index 8d2918cc5a53..df21e56c30ba 100644
--- a/pkgs/by-name/ju/judy/package.nix
+++ b/pkgs/by-name/ju/judy/package.nix
@@ -17,7 +17,16 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoreconfHook ];
   depsBuildBuild = [ pkgsBuildBuild.stdenv.cc ];
-  patches = [ ./cross.patch ];
+  patches = [
+    ./cross.patch
+    # Fix reproducible timestamps.
+    ./fix-source-date.patch
+  ];
+
+  # fixes non-determinism between builds on macos
+  preConfigure = lib.optional stdenv.hostPlatform.isDarwin ''
+    export LDFLAGS="$LDFLAGS -Wl,-no_uuid -Wl,-install_name,@rpath/libJudy.1.dylib"
+  '';
 
   # Disable parallel builds as manpages lack some dependencies:
   #    ../tool/jhton ext/JudyHS_funcs_3.htm | grep -v '^[   ]*$' | sed -e 's/\.C//' > man/man3/JudyHS_funcs