diff --git a/pkgs/applications/science/logic/yices/default.nix b/pkgs/applications/science/logic/yices/default.nix
index de80cd725653..f29a5e1f3f51 100644
--- a/pkgs/applications/science/logic/yices/default.nix
+++ b/pkgs/applications/science/logic/yices/default.nix
@@ -2,20 +2,15 @@
 
 stdenv.mkDerivation rec {
   pname = "yices";
-  # We never want X.Y.${odd} versions as they are moving development tags.
-  version = "2.6.4";
+  version = "2.6.5";
 
   src = fetchFromGitHub {
     owner  = "SRI-CSL";
     repo   = "yices2";
     rev    = "Yices-${version}";
-    sha256 = "sha256-qdxh86CkKdm65oHcRgaafTG9GUOoIgTDjeWmRofIpNE=";
+    hash = "sha256-/sKyHkFW5I5kojNIRPEKojzTvfRZiyVIN5VlBIbAV7k=";
   };
 
-  patches = [
-    # musl has no ldconfig, create symlinks explicitly
-    ./linux-no-ldconfig.patch
-  ];
   postPatch = "patchShebangs tests/regress/check.sh";
 
   nativeBuildInputs = [ autoreconfHook ];
diff --git a/pkgs/applications/science/logic/yices/linux-no-ldconfig.patch b/pkgs/applications/science/logic/yices/linux-no-ldconfig.patch
deleted file mode 100644
index bad3da6ad4a2..000000000000
--- a/pkgs/applications/science/logic/yices/linux-no-ldconfig.patch
+++ /dev/null
@@ -1,13 +0,0 @@
---- a/Makefile.build
-+++ b/Makefile.build
-@@ -474,8 +474,9 @@ install-darwin: install-default
- install-solaris: install-default
- 	$(LDCONFIG) -n $(DESTDIR)$(libdir) && (cd $(DESTDIR)$(libdir) && $(LN_S) -f libyices.so.$(YICES_VERSION) libyices.so)
- 
-+# avoid ldconfig as it's not present on musl
- install-linux install-unix: install-default
--	$(LDCONFIG) -n $(DESTDIR)$(libdir) && (cd $(DESTDIR)$(libdir) && $(LN_S) -f libyices.so.$(YICES_VERSION) libyices.so)
-+	(cd $(DESTDIR)$(libdir) && $(LN_S) -f libyices.so.$(YICES_VERSION) libyices.so.$(MAJOR).$(MINOR) && $(LN_S) -f libyices.so.$(MAJOR).$(MINOR) libyices.so)
- 
- # on FreeBSD: the library file is libyices.so.X.Y and ldconfig does not take -n
- # TODO: fix this. We must also create a symbolic link: libyices.so.X in libdir