diff --git a/pkgs/development/compilers/smlnj/default.nix b/pkgs/development/compilers/smlnj/default.nix
index 0565e578a7bb..c31d89f5b588 100644
--- a/pkgs/development/compilers/smlnj/default.nix
+++ b/pkgs/development/compilers/smlnj/default.nix
@@ -4,7 +4,7 @@
   fetchurl,
 }:
 let
-  version = "110.99.8";
+  version = "110.99.9";
   baseurl = "https://smlnj.cs.uchicago.edu/dist/working/${version}";
 
   arch = if stdenv.hostPlatform.is64bit then "64" else "32";
diff --git a/pkgs/development/compilers/smlnj/hashes.json b/pkgs/development/compilers/smlnj/hashes.json
index 236174684457..0e9a1b551058 100644
--- a/pkgs/development/compilers/smlnj/hashes.json
+++ b/pkgs/development/compilers/smlnj/hashes.json
@@ -1,27 +1,27 @@
 {
-  "boot.amd64-unix.tgz": "sha256-udLexaSne+fK87rcEWauTL2RL7eyLAQclFlHf1348GQ=",
-  "boot.x86-unix.tgz": "sha256-pNPW12mc17QcLq+vg8l8nYmFOEy6VbdCAlRTFwOXL/o=",
-  "config.tgz": "sha256-63pvIXHI4XJ+R2mn7vcvcuxf8a6FYd1giICZeJjbAjs=",
-  "cm.tgz": "sha256-JBjG6OXw0F6DiDSd4O1wiGmRxxj4gXrs+baVevO4Xd0=",
-  "compiler.tgz": "sha256-GsEFh6XhEAi144+r2B0m5n7bWlPwnm5b89JxTBSAGGw=",
-  "runtime.tgz": "sha256-q4ViTS3/OuHkNChRrECOANWshmu0EGtFdSWF5jHIbcU=",
-  "system.tgz": "sha256-x7TzZKUNZFAmnv4iR4bJ0uK+pMVMKrt0F9NViJNw7s8=",
-  "MLRISC.tgz": "sha256-fKWObr2uulRF0HCUaG19xwUkHlSEyB2OmDvjsX9904o=",
-  "smlnj-lib.tgz": "sha256-79ExeRN/w/Tgi+L4FY6th5JKBh1Ga5SqlLZ7kErjYK0=",
-  "old-basis.tgz": "sha256-qkOFr+slwF/kMqH9346RHHqMCFUkhgt43JJedhNjHHI=",
-  "ckit.tgz": "sha256-VxeJBBJviCJGjiT0fb7nXKxPxrM5eZtOjHt9+Nw5wZ8=",
-  "nlffi.tgz": "sha256-miwWceBsB9M4iuFjgwPX1K6Ljx2NXPrL3YczbrSkEco=",
-  "cml.tgz": "sha256-pF0zZdSt8RMWKv7Yb6s3GTvfBiIIOfHqXLAs+tFH02c=",
-  "eXene.tgz": "sha256-XkaLMzyCTYD4vHrd83iZ40ETlZH8TQBO7c4WpqcSF3I=",
-  "ml-lpt.tgz": "sha256-vBZ7QUQSKaLN171usPGyORuxSg965egAwI2HgfylIWU=",
-  "ml-lex.tgz": "sha256-f2cSozI8QCZJByE4FFF8FAJPINAXkfTUeTLCebYS8yw=",
-  "ml-yacc.tgz": "sha256-eS7zzvEkkBg8teP3Kb8wMLXogUM6zLukkBXIEo0mm1Y=",
-  "ml-burg.tgz": "sha256-tRKoTgC0eGBvay6nfS+w8+XFnq2I6oaBltPhSNKCai4=",
-  "pgraph.tgz": "sha256-t7lrnIUHo9QPYP9VUxSc+BW98Ppc7JuBukjenvHy+jk=",
-  "trace-debug-profile.tgz": "sha256-ZEEY14wrAxayLUO7EKcnFRfsN78ZIoONXkNCJ0Wyggk=",
-  "heap2asm.tgz": "sha256-M94j6ElcXRjUYbRZGnvHORBdokEYomC2dB4hbFVOdOM=",
-  "smlnj-c.tgz": "sha256-ebZX6mgIPCBMA4ygCVMJrh8InqVFY/kNZEY0jwbFw6E=",
-  "doc.tgz": "sha256-Jml2Do2yufMtN80avD9ffRt5voTmLFIuMTOaiXLhHwo=",
-  "asdl.tgz": "sha256-nNiLcWjGqyEyp9JVrti+wT2LgxKqOV0GNK5z/NxKTG0=",
-  "version": "110.99.8"
+  "boot.amd64-unix.tgz": "sha256-K0wju05JvgQAQ6two9+OksJv/hy6ZS7YA0jNP+LRnGM=",
+  "boot.x86-unix.tgz": "sha256-IHv92S8Te+R5M1RcwfMw548B3HbCk2V5cdAvWJ+usdk=",
+  "config.tgz": "sha256-v0ebpRhlL8GTrAlU5GxyxTVqM8aYD5/La89uVcdzFBg=",
+  "cm.tgz": "sha256-Oufr7JPsZJs4Ycvzg7l3Q10mvA4bHBQnwI2mbJq43b8=",
+  "compiler.tgz": "sha256-s+TCoUIBB2oZUCD9uU+dl1oAT8BmNhESQwfNcNXzZ5Y=",
+  "runtime.tgz": "sha256-IW4Bk6GTri5ZKW0nxC5ho6p6Ft3ak206BqK5RZJ2t5I=",
+  "system.tgz": "sha256-mg69PE3c932D7hVX+/ijoTR8HJXkE+mfptWoNZpXq1Y=",
+  "MLRISC.tgz": "sha256-2U33ZeraqeyY3Kvh2NuymXWo00FSziKPPe/6fTtfdWA=",
+  "smlnj-lib.tgz": "sha256-68nW25FtS5mCk91AJHYAh5ZP2LNL8556pPknxAH6NKo=",
+  "old-basis.tgz": "sha256-sBwAX50UZir4TGiAAYR22A8tXkisN8o6kGiGuMXxw/s=",
+  "ckit.tgz": "sha256-FYb6ICqh8poWDewJ6lhxClK3S2FaYD+yysNhgwHVXZo=",
+  "nlffi.tgz": "sha256-Kcz408GxyGFPh+C3xu5bL2xux4z2MhY/Fk6Lcb2G4ME=",
+  "cml.tgz": "sha256-7+r63cQwe2AuXRPs92wtUiEkxeQDQdkEn5+RK8j2eu4=",
+  "eXene.tgz": "sha256-jEyNeCPP06ULU8fWaxwfYYVHfwRDEh63SzwwhQgFfis=",
+  "ml-lpt.tgz": "sha256-QbE7uExNE5vDdDxOq/ybGWW8YO93FHnmyKOB4Vlhf5g=",
+  "ml-lex.tgz": "sha256-JbE3lYH7mWpzLNWR0DLTiDOOXR2PlcThh6ImWyEO9oY=",
+  "ml-yacc.tgz": "sha256-ED4m5lQPN4ned/HpnPMVUGgsnqIsP8HwbxJRqNXSYzA=",
+  "ml-burg.tgz": "sha256-+aih2ysnlPavDivDeHinz5PKPxaXJ8XwFm7TYUCjOYs=",
+  "pgraph.tgz": "sha256-e+T6QI6J7zVZ6c3eb8J4BYdU7QtroYdpXFxdVADReR8=",
+  "trace-debug-profile.tgz": "sha256-r0X3H+0QjEAECI7HE127Zs/jguce2amSn/ql9pv06F8=",
+  "heap2asm.tgz": "sha256-HiIXN8bNZ1WtQVYICz3jVKpGISpTHcIwSwKBTF8Dbz4=",
+  "smlnj-c.tgz": "sha256-IWjIVlKuqw3eqzOSItJP75VqlgoVYBru2yutUe4F8FQ=",
+  "doc.tgz": "sha256-c6ZFpZVFQ4cz5av8TeSQJVOmg90XuERcrbb5PFzdEuY=",
+  "asdl.tgz": "sha256-OUBWt9G9uUwnni8FJXHNU8EsPRLxVM23y3sFiaVp490=",
+  "version": "110.99.9"
 }