diff --git a/Cargo.toml b/Cargo.toml
index 9f84cc7..aa75167 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -43,7 +43,7 @@ symphonia-aiff = ["symphonia/aiff", "symphonia/pcm"]
 quickcheck = "0.9.2"
 rstest = "0.18.2"
 rstest_reuse = "0.6.0"
-assert_float_eq = "1.1.3"
+approx = "0.5.1"
 
 [[example]]
 name = "music_m4a"
diff --git a/src/lib.rs b/src/lib.rs
index a94bbd4..0c86ba9 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -139,4 +139,4 @@ pub use crate::stream::{OutputStream, OutputStreamHandle, PlayError, StreamError
 
 #[cfg(test)]
 #[macro_use]
-extern crate assert_float_eq;
+extern crate approx;
diff --git a/src/source/linear_ramp.rs b/src/source/linear_ramp.rs
index 5349f8e..5be8b39 100644
--- a/src/source/linear_ramp.rs
+++ b/src/source/linear_ramp.rs
@@ -205,30 +205,30 @@ mod tests {
         let source1 = cycle_source(20, vec![0.0f32, 0.4f32, 0.8f32]);
         let mut faded = linear_gain_ramp(source1, Duration::from_secs(10), 0.0, 1.0, true);
 
-        assert_float_absolute_eq!(faded.next().unwrap(), 0.0); // source value 0
-        assert_float_absolute_eq!(faded.next().unwrap(), 0.04); // source value 0.4, ramp gain 0.1
-        assert_float_absolute_eq!(faded.next().unwrap(), 0.16); // source value 0.8, ramp gain 0.2
+        assert_abs_diff_eq!(faded.next().unwrap(), 0.0); // source value 0
+        assert_abs_diff_eq!(faded.next().unwrap(), 0.04); // source value 0.4, ramp gain 0.1
+        assert_abs_diff_eq!(faded.next().unwrap(), 0.16); // source value 0.8, ramp gain 0.2
 
         if let Ok(_result) = faded.try_seek(Duration::from_secs(5)) {
-            assert_float_absolute_eq!(faded.next().unwrap(), 0.40); // source value 0.8, ramp gain 0.5
-            assert_float_absolute_eq!(faded.next().unwrap(), 0.0); // source value 0, ramp gain 0.6
-            assert_float_absolute_eq!(faded.next().unwrap(), 0.28); // source value 0.4. ramp gain 0.7
+            assert_abs_diff_eq!(faded.next().unwrap(), 0.40); // source value 0.8, ramp gain 0.5
+            assert_abs_diff_eq!(faded.next().unwrap(), 0.0); // source value 0, ramp gain 0.6
+            assert_abs_diff_eq!(faded.next().unwrap(), 0.28); // source value 0.4. ramp gain 0.7
         } else {
             panic!("try_seek() failed!");
         }
 
         if let Ok(_result) = faded.try_seek(Duration::from_secs(0)) {
-            assert_float_absolute_eq!(faded.next().unwrap(), 0.0); // source value 0, ramp gain 0.0
-            assert_float_absolute_eq!(faded.next().unwrap(), 0.04); // source value 0.4, ramp gain 0.1
-            assert_float_absolute_eq!(faded.next().unwrap(), 0.16); // source value 0.8. ramp gain 0.2
+            assert_abs_diff_eq!(faded.next().unwrap(), 0.0); // source value 0, ramp gain 0.0
+            assert_abs_diff_eq!(faded.next().unwrap(), 0.04); // source value 0.4, ramp gain 0.1
+            assert_abs_diff_eq!(faded.next().unwrap(), 0.16); // source value 0.8. ramp gain 0.2
         } else {
             panic!("try_seek() failed!");
         }
 
         if let Ok(_result) = faded.try_seek(Duration::from_secs(10)) {
-            assert_float_absolute_eq!(faded.next().unwrap(), 0.4); // source value 0.4, ramp gain 1.0
-            assert_float_absolute_eq!(faded.next().unwrap(), 0.8); // source value 0.8, ramp gain 1.0
-            assert_float_absolute_eq!(faded.next().unwrap(), 0.0); // source value 0. ramp gain 1.0
+            assert_abs_diff_eq!(faded.next().unwrap(), 0.4); // source value 0.4, ramp gain 1.0
+            assert_abs_diff_eq!(faded.next().unwrap(), 0.8); // source value 0.8, ramp gain 1.0
+            assert_abs_diff_eq!(faded.next().unwrap(), 0.0); // source value 0. ramp gain 1.0
         } else {
             panic!("try_seek() failed!");
         }