diff --git a/README.md b/README.md
index 135180c..5362a8a 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ The package can be installed by adding `membrane_rtp_h264_plugin` to your list o
 ```elixir
 def deps do
   [
-    {:membrane_rtp_h264_plugin, "~> 0.19.3"}
+    {:membrane_rtp_h264_plugin, "~> 0.19.4"}
   ]
 end
 ```
diff --git a/lib/rtp_h264/utils.ex b/lib/rtp_h264/utils.ex
index b48aabc..6239c0e 100644
--- a/lib/rtp_h264/utils.ex
+++ b/lib/rtp_h264/utils.ex
@@ -3,6 +3,30 @@ defmodule Membrane.RTP.H264.Utils do
   Utility functions for RTP packets containing H264 encoded frames.
   """
 
+  @doc """
+  Deprecated since `v0.19.4`. Use `keyframe?/2` instead.
+
+  Checks whether RTP payload contains H264 keyframe.
+
+  By default, with option `look_for` set to `:sps`, will in some cases check
+  whether the payload contains SPS (NALU payload type 7);
+  if `look_for` is set to `:idr`, will look exclusively for IDR frames
+  (NALU payload type 5).
+  """
+  @deprecated "Use #{inspect(__MODULE__)}.keyframe?/2 instead"
+  @spec is_keyframe(binary(), :sps | :idr) :: boolean()
+  # credo:disable-for-next-line Credo.Check.Readability.PredicateFunctionNames
+  def is_keyframe(rtp_payload, look_for \\ :sps)
+
+  # credo:disable-for-next-line Credo.Check.Readability.PredicateFunctionNames
+  def is_keyframe(rtp_payload, _look_for) when byte_size(rtp_payload) < 1, do: false
+
+  # credo:disable-for-next-line Credo.Check.Readability.PredicateFunctionNames
+  def is_keyframe(rtp_payload, look_for) do
+    <<_f::1, _nri::2, nalu_type::5, rest::binary>> = rtp_payload
+    do_is_keyframe(nalu_type, rest, look_for)
+  end
+
   @doc """
   Checks whether RTP payload contains H264 keyframe.
 
diff --git a/mix.exs b/mix.exs
index a302c5a..cbdd3cd 100644
--- a/mix.exs
+++ b/mix.exs
@@ -1,7 +1,7 @@
 defmodule Membrane.RTP.H264.MixProject do
   use Mix.Project
 
-  @version "0.19.3"
+  @version "0.19.4"
   @github_url "https://github.com/membraneframework/membrane_rtp_h264_plugin"
 
   def project do