diff --git a/pkgs/development/libraries/liburcu/default.nix b/pkgs/development/libraries/liburcu/default.nix
index 44daabe6a736..e7f627f62f77 100644
--- a/pkgs/development/libraries/liburcu/default.nix
+++ b/pkgs/development/libraries/liburcu/default.nix
@@ -1,12 +1,12 @@
 { stdenv, fetchurl }:
 
 stdenv.mkDerivation rec {
-  version = "0.8.1";
+  version = "0.8.4";
   name = "liburcu-${version}";
 
   src = fetchurl {
     url = "http://lttng.org/files/urcu/userspace-rcu-${version}.tar.bz2";
-    sha256 = "07p0lh43j7i1606m4l1dxm195z6fcfz74fmx7q2d7mrhn2bzc240";
+    sha256 = "04py48xphylb246mpkzvld0yprj5h7cyv6pydr8b25aax5bs3h4n";
   };
 
   meta = with stdenv.lib; {
diff --git a/pkgs/development/tools/misc/lttng-tools/default.nix b/pkgs/development/tools/misc/lttng-tools/default.nix
index 1d223d83a65f..541385d8bec2 100644
--- a/pkgs/development/tools/misc/lttng-tools/default.nix
+++ b/pkgs/development/tools/misc/lttng-tools/default.nix
@@ -1,11 +1,11 @@
 { stdenv, fetchurl, popt, libuuid, liburcu, lttngUst, kmod }:
 
 stdenv.mkDerivation rec {
-  name = "lttng-tools-2.3.0";
+  name = "lttng-tools-2.4.1";
 
   src = fetchurl {
     url = "https://lttng.org/files/lttng-tools/${name}.tar.bz2";
-    sha256 = "16j55xqrh00mjbcvdmdkfxchavi7jsxlpnfjqc1g1d3x65ss9wri";
+    sha256 = "1v9f7a3c2shwgn4g759bblgr27h9ql9sfq71r1mbkf8rd235g2jr";
   };
 
   buildInputs = [ popt libuuid liburcu lttngUst ];
diff --git a/pkgs/development/tools/misc/lttng-ust/default.nix b/pkgs/development/tools/misc/lttng-ust/default.nix
index 014a97a91581..0cba211f28b9 100644
--- a/pkgs/development/tools/misc/lttng-ust/default.nix
+++ b/pkgs/development/tools/misc/lttng-ust/default.nix
@@ -12,11 +12,11 @@
 # Debian builds with std.h (systemtap).
 
 stdenv.mkDerivation rec {
-  name = "lttng-ust-2.3.0";
+  name = "lttng-ust-2.4.1";
 
   src = fetchurl {
     url = "https://lttng.org/files/lttng-ust/${name}.tar.bz2";
-    sha256 = "1hazjybrppyaakvfp1bs92vx0n2sgcsw0m6i5hwq7xq8vij7cj4q";
+    sha256 = "1nx9b1haiylajzjy03wgfcy85nwg578c6gy8ip55y8cabjrw0hp1";
   };
 
   buildInputs = [ liburcu ];
diff --git a/pkgs/os-specific/linux/lttng-modules/default.nix b/pkgs/os-specific/linux/lttng-modules/default.nix
index 1673472036f3..8e20bf1e3d3f 100644
--- a/pkgs/os-specific/linux/lttng-modules/default.nix
+++ b/pkgs/os-specific/linux/lttng-modules/default.nix
@@ -1,12 +1,12 @@
 { stdenv, fetchurl, kernel }:
 
 stdenv.mkDerivation rec {
-  pname = "lttng-modules-2.3.0";
+  pname = "lttng-modules-2.4.1";
   name = "${pname}-${kernel.version}";
 
   src = fetchurl {
     url = "https://lttng.org/files/lttng-modules/${pname}.tar.bz2";
-    sha256 = "0l9fbmpsjvm5pbrc6axy8chdp21j4b8fm0hmjhpk658ll0iixmpb";
+    sha256 = "1qn1qm8lwqw9ri9wfkf6k3d58gl9rwffmpbpkwx21v1fw95zi92k";
   };
 
   patches = [ ./lttng-fix-build-error-on-linux-3.2.patch ];