diff --git a/rosette/private/install.rkt b/rosette/private/install.rkt
index 5ae12314..4709ab39 100644
--- a/rosette/private/install.rkt
+++ b/rosette/private/install.rkt
@@ -20,7 +20,7 @@
 ; far more obvious.
 (define z3-install-failure #f)
 
-(define z3-version "4.8.8")
+(define z3-version "4.12.6")
 
 (define (print-failure path msg)
   (printf "\n\n********** Failed to install Z3 **********\n\n")
@@ -66,19 +66,17 @@
          (not (equal? (resolve-path p) p)))))
 
 (define (get-z3-url)
-  ; TODO: Z3 packages a macOS aarch64 binary as of 4.8.16, so remove this special case when we update
-  ; to a newer Z3 version.
-  (if (and (equal? (system-type 'os*) 'macosx) (equal? (system-type 'arch) 'aarch64))
-      (values "https://github.com/emina/rosette/releases/download/4.1/z3-4.8.8-aarch64-osx-13.3.1.zip" "z3")
-      (let ()
-        (define site "https://github.com/Z3Prover/z3/releases/download")
-        (define-values (os exe)
-          (match (list (system-type 'os*) (system-type 'arch))
-            ['(linux x86_64)   (values "x64-ubuntu-16.04" "z3")]
-            [`(macosx ,_)      (values "x64-osx-10.14.6" "z3")]
-            ['(windows x86_64) (values "x64-win" "z3.exe")]
-            [any               (raise-user-error 'get-z3-url "No Z3 binary available for system type '~a" any)]))
-        (define name (format "z3-~a-~a" z3-version os))
-        (values
-         (format "~a/z3-~a/~a.zip" site z3-version name)
-         (format "~a/bin/~a" name exe)))))
+  (define site "https://github.com/Z3Prover/z3/releases/download")
+  (define-values (os exe)
+    (match (list (system-type 'os*) (system-type 'arch))
+      ['(linux x86_64)    (values "x64-glibc-2.35" "z3")]
+      ['(linux aarch64)   (values "arm64-glibc-2.35" "z3")]
+      ['(macosx x86_64)   (values "x64-osx-11.7.10" "z3")]
+      ['(macosx aarch64)  (values "arm64-osx-11.0" "z3")]
+      ['(windows x86_64)  (values "x64-win" "z3.exe")]
+      ['(windows aarch64) (values "arm64-win" "z3.exe")]
+      [any               (raise-user-error 'get-z3-url "No Z3 binary available for system type '~a" any)]))
+  (define name (format "z3-~a-~a" z3-version os))
+  (values
+   (format "~a/z3-~a/~a.zip" site z3-version name)
+   (format "~a/bin/~a" name exe)))