diff --git a/CHANGELOG.md b/CHANGELOG.md
index ae92aca14..f908395f9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.75.1
+
+* Throw errors for misplaced statements in keyframe blocks.
+
 ## 1.75.0
 
 * Fix a bug in which stylesheet canonicalization could be cached incorrectly
diff --git a/lib/src/visitor/async_evaluate.dart b/lib/src/visitor/async_evaluate.dart
index ce4105bda..8343a9131 100644
--- a/lib/src/visitor/async_evaluate.dart
+++ b/lib/src/visitor/async_evaluate.dart
@@ -1324,6 +1324,9 @@ final class _EvaluateVisitor
     if (_declarationName != null) {
       throw _exception(
           "At-rules may not be used within nested declarations.", node.span);
+    } else if (_inKeyframes && _parent is CssKeyframeBlock) {
+      throw _exception(
+          "At-rules may not be used within keyframe blocks.", node.span);
     }
 
     var name = await _interpolationToValue(node.name);
@@ -1895,6 +1898,9 @@ final class _EvaluateVisitor
     if (_declarationName != null) {
       throw _exception(
           "Media rules may not be used within nested declarations.", node.span);
+    } else if (_inKeyframes && _parent is CssKeyframeBlock) {
+      throw _exception(
+          "At-rules may not be used within keyframe blocks.", node.span);
     }
 
     var queries = await _visitMediaQueries(node.query);
@@ -1985,6 +1991,9 @@ final class _EvaluateVisitor
     if (_declarationName != null) {
       throw _exception(
           "Style rules may not be used within nested declarations.", node.span);
+    } else if (_inKeyframes && _parent is CssKeyframeBlock) {
+      throw _exception(
+          "Style rules may not be used within keyframe blocks.", node.span);
     }
 
     var (selectorText, selectorMap) =
@@ -2112,6 +2121,9 @@ final class _EvaluateVisitor
       throw _exception(
           "Supports rules may not be used within nested declarations.",
           node.span);
+    } else if (_inKeyframes && _parent is CssKeyframeBlock) {
+      throw _exception(
+          "At-rules may not be used within keyframe blocks.", node.span);
     }
 
     var condition = CssValue(
@@ -3270,6 +3282,9 @@ final class _EvaluateVisitor
     if (_declarationName != null) {
       throw _exception(
           "At-rules may not be used within nested declarations.", node.span);
+    } else if (_inKeyframes && _parent is CssKeyframeBlock) {
+      throw _exception(
+          "At-rules may not be used within keyframe blocks.", node.span);
     }
 
     if (node.isChildless) {
@@ -3353,6 +3368,9 @@ final class _EvaluateVisitor
     if (_declarationName != null) {
       throw _exception(
           "Media rules may not be used within nested declarations.", node.span);
+    } else if (_inKeyframes && _parent is CssKeyframeBlock) {
+      throw _exception(
+          "At-rules may not be used within keyframe blocks.", node.span);
     }
 
     var mergedQueries = _mediaQueries.andThen(
@@ -3401,6 +3419,9 @@ final class _EvaluateVisitor
     if (_declarationName != null) {
       throw _exception(
           "Style rules may not be used within nested declarations.", node.span);
+    } else if (_inKeyframes && _parent is CssKeyframeBlock) {
+      throw _exception(
+          "Style rules may not be used within keyframe blocks.", node.span);
     }
 
     var styleRule = _styleRule;
diff --git a/lib/src/visitor/evaluate.dart b/lib/src/visitor/evaluate.dart
index 32c4e2764..bbf334ad1 100644
--- a/lib/src/visitor/evaluate.dart
+++ b/lib/src/visitor/evaluate.dart
@@ -5,7 +5,7 @@
 // DO NOT EDIT. This file was generated from async_evaluate.dart.
 // See tool/grind/synchronize.dart for details.
 //
-// Checksum: 05cb957cd0c7698d8ad648f31d862dc91f0daa7b
+// Checksum: 135bf44f65efcbebb4a55b38ada86c754fcdb86b
 //
 // ignore_for_file: unused_import
 
@@ -1321,6 +1321,9 @@ final class _EvaluateVisitor
     if (_declarationName != null) {
       throw _exception(
           "At-rules may not be used within nested declarations.", node.span);
+    } else if (_inKeyframes && _parent is CssKeyframeBlock) {
+      throw _exception(
+          "At-rules may not be used within keyframe blocks.", node.span);
     }
 
     var name = _interpolationToValue(node.name);
@@ -1887,6 +1890,9 @@ final class _EvaluateVisitor
     if (_declarationName != null) {
       throw _exception(
           "Media rules may not be used within nested declarations.", node.span);
+    } else if (_inKeyframes && _parent is CssKeyframeBlock) {
+      throw _exception(
+          "At-rules may not be used within keyframe blocks.", node.span);
     }
 
     var queries = _visitMediaQueries(node.query);
@@ -1975,6 +1981,9 @@ final class _EvaluateVisitor
     if (_declarationName != null) {
       throw _exception(
           "Style rules may not be used within nested declarations.", node.span);
+    } else if (_inKeyframes && _parent is CssKeyframeBlock) {
+      throw _exception(
+          "Style rules may not be used within keyframe blocks.", node.span);
     }
 
     var (selectorText, selectorMap) =
@@ -2102,6 +2111,9 @@ final class _EvaluateVisitor
       throw _exception(
           "Supports rules may not be used within nested declarations.",
           node.span);
+    } else if (_inKeyframes && _parent is CssKeyframeBlock) {
+      throw _exception(
+          "At-rules may not be used within keyframe blocks.", node.span);
     }
 
     var condition =
@@ -3240,6 +3252,9 @@ final class _EvaluateVisitor
     if (_declarationName != null) {
       throw _exception(
           "At-rules may not be used within nested declarations.", node.span);
+    } else if (_inKeyframes && _parent is CssKeyframeBlock) {
+      throw _exception(
+          "At-rules may not be used within keyframe blocks.", node.span);
     }
 
     if (node.isChildless) {
@@ -3323,6 +3338,9 @@ final class _EvaluateVisitor
     if (_declarationName != null) {
       throw _exception(
           "Media rules may not be used within nested declarations.", node.span);
+    } else if (_inKeyframes && _parent is CssKeyframeBlock) {
+      throw _exception(
+          "At-rules may not be used within keyframe blocks.", node.span);
     }
 
     var mergedQueries = _mediaQueries.andThen(
@@ -3369,6 +3387,9 @@ final class _EvaluateVisitor
     if (_declarationName != null) {
       throw _exception(
           "Style rules may not be used within nested declarations.", node.span);
+    } else if (_inKeyframes && _parent is CssKeyframeBlock) {
+      throw _exception(
+          "Style rules may not be used within keyframe blocks.", node.span);
     }
 
     var styleRule = _styleRule;
diff --git a/pkg/sass_api/CHANGELOG.md b/pkg/sass_api/CHANGELOG.md
index 77d3aaa74..028cd0796 100644
--- a/pkg/sass_api/CHANGELOG.md
+++ b/pkg/sass_api/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 10.2.1
+
+* No user-visible changes.
+
 ## 10.2.0
 
 * No user-visible changes.
diff --git a/pkg/sass_api/pubspec.yaml b/pkg/sass_api/pubspec.yaml
index ff9a9b383..5f7a9be18 100644
--- a/pkg/sass_api/pubspec.yaml
+++ b/pkg/sass_api/pubspec.yaml
@@ -2,7 +2,7 @@ name: sass_api
 # Note: Every time we add a new Sass AST node, we need to bump the *major*
 # version because it's a breaking change for anyone who's implementing the
 # visitor interface(s).
-version: 10.2.0
+version: 10.2.1-dev
 description: Additional APIs for Dart Sass.
 homepage: https://github.com/sass/dart-sass
 
@@ -10,7 +10,7 @@ environment:
   sdk: ">=3.0.0 <4.0.0"
 
 dependencies:
-  sass: 1.75.0
+  sass: 1.75.1
 
 dev_dependencies:
   dartdoc: ^6.0.0
diff --git a/pubspec.yaml b/pubspec.yaml
index 54602aa9a..c0f363e2b 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: sass
-version: 1.75.0
+version: 1.75.1-dev
 description: A Sass implementation in Dart.
 homepage: https://github.com/sass/dart-sass