diff --git a/src/main/kotlin/insyncwithfoo/ryecharm/TOML.kt b/src/main/kotlin/insyncwithfoo/ryecharm/TOML.kt
index 536602a..352a689 100644
--- a/src/main/kotlin/insyncwithfoo/ryecharm/TOML.kt
+++ b/src/main/kotlin/insyncwithfoo/ryecharm/TOML.kt
@@ -33,7 +33,7 @@ internal val TomlTable.absoluteName: TOMLPath
     get() = TOMLPath(header.key?.text.orEmpty())
 
 
-private val TomlKey.name: String
+private val TomlKey.segmentedName: String
     get() = segments.joinToString(".") { it.text }
 
 
@@ -43,9 +43,9 @@ private val TomlKey.table: TomlTable?
 
 internal val TomlKey.absoluteName: TOMLPath
     get() = when {
-        parent === containingFile -> TOMLPath(name)
-        table == null -> TOMLPath(name)
-        else -> table!!.absoluteName + TOMLPath(name)
+        parent === containingFile -> TOMLPath(segmentedName)
+        table == null -> TOMLPath(segmentedName)
+        else -> table!!.absoluteName + TOMLPath(segmentedName)
     }
 
 
diff --git a/src/main/kotlin/insyncwithfoo/ryecharm/common/injections/RequirementsInjector.kt b/src/main/kotlin/insyncwithfoo/ryecharm/common/injections/RequirementsInjector.kt
index 44f6f24..a624677 100644
--- a/src/main/kotlin/insyncwithfoo/ryecharm/common/injections/RequirementsInjector.kt
+++ b/src/main/kotlin/insyncwithfoo/ryecharm/common/injections/RequirementsInjector.kt
@@ -27,8 +27,8 @@ import org.toml.lang.psi.TomlLiteral
  * * `uv.upgrade-package`
  * * `uv.pip.upgrade-package`
  * 
- * As a bonus, `pyproject.toml`'s
- * `project.optional-dependencies` is also supported.
+ * As a bonus, `pyproject.toml`'s `project.optional-dependencies`
+ * and `dependency-groups` (PEP 735) are also supported.
  */
 internal class RequirementsInjector : LanguageInjectionContributor {
     
@@ -64,8 +64,8 @@ internal class RequirementsInjector : LanguageInjectionContributor {
         val virtualFile = file.virtualFile ?: return null
         val absoluteName = key.absoluteName
         
-        if (virtualFile.isPyprojectToml && absoluteName isChildOf "project.optional-dependencies") {
-            return injection
+        if (virtualFile.isPyprojectToml) {
+            return getPyprojectTomlInjection(absoluteName)
         }
         
         val relativeName = when {
@@ -93,4 +93,10 @@ internal class RequirementsInjector : LanguageInjectionContributor {
         return injection
     }
     
+    private fun getPyprojectTomlInjection(keyAbsoluteName: TOMLPath) = when {
+        keyAbsoluteName isChildOf "project.optional-dependencies" -> injection
+        keyAbsoluteName isChildOf "dependency-groups" -> injection
+        else -> null
+    }
+    
 }
diff --git a/src/test/kotlin/insyncwithfoo/ryecharm/common/injections/RequirementsInjectorTest.kt b/src/test/kotlin/insyncwithfoo/ryecharm/common/injections/RequirementsInjectorTest.kt
index 6c77334..825ffa8 100644
--- a/src/test/kotlin/insyncwithfoo/ryecharm/common/injections/RequirementsInjectorTest.kt
+++ b/src/test/kotlin/insyncwithfoo/ryecharm/common/injections/RequirementsInjectorTest.kt
@@ -11,6 +11,11 @@ internal class RequirementsInjectorTest : LanguageInjectionTestCase() {
         assertEquals(2, fragments.size)
     }
     
+    @Test
+    fun `test dependency-groups`() = fileBasedTest("dependencyGroups/pyproject.toml") {
+        assertEquals(1, fragments.size)
+    }
+    
     @Test
     fun `test other keys`() {
         val directoriesAndKeyNames = mapOf(
diff --git a/src/test/testData/common/injections/RequirementsInjectorTest/dependencyGroups/pyproject.toml b/src/test/testData/common/injections/RequirementsInjectorTest/dependencyGroups/pyproject.toml
new file mode 100644
index 0000000..b9dba26
--- /dev/null
+++ b/src/test/testData/common/injections/RequirementsInjectorTest/dependencyGroups/pyproject.toml
@@ -0,0 +1,5 @@
+[dependency-groups]
+foo = [
+	"ruff==0.6.9",
+	{ include-group = "bar" }
+]