diff --git a/pkgs/development/libraries/tdlib/default.nix b/pkgs/development/libraries/tdlib/default.nix
index e725c5893f2f..3b341cb2eae0 100644
--- a/pkgs/development/libraries/tdlib/default.nix
+++ b/pkgs/development/libraries/tdlib/default.nix
@@ -2,7 +2,7 @@
 
 stdenv.mkDerivation {
   pname = "tdlib";
-  version = "1.8.33";
+  version = "1.8.34";
 
   src = fetchFromGitHub {
     owner = "tdlib";
@@ -11,8 +11,8 @@ stdenv.mkDerivation {
     # The tdlib authors do not set tags for minor versions, but
     # external programs depending on tdlib constrain the minor
     # version, hence we set a specific commit with a known version.
-    rev = "cb164927417f22811c74cd8678ed4a5ab7cb80ba";
-    hash = "sha256-917w8KZPkgW4O5ftONi9UzpbNIPm9YBgSz11OPFX6lw=";
+    rev = "1fa2a372a88c26369dcac2ce476166531df74a77";
+    hash = "sha256-7I2hm3KFtiJwz1tOxh+kSPItFnUcE4ALT865wAyASCA=";
   };
 
   buildInputs = [ gperf openssl readline zlib ];