diff --git a/.github/workflows/actions.yml b/.github/workflows/actions.yml
index 4c5cb0796..44e134d49 100644
--- a/.github/workflows/actions.yml
+++ b/.github/workflows/actions.yml
@@ -18,7 +18,7 @@ jobs:
       fail-fast: false
       matrix:
         java-version: [ 8, 17 ]
-        scala-binary-version: [ 2.12, 2.13, 3.3, 3.4.2 ]
+        scala-binary-version: [ 2.12, 2.13, 3.3, 3.4.3, 3.5.0 ]
         include:
           # Including lowest/highest versions that work with Java 21
           - java-version: 21
@@ -34,7 +34,9 @@ jobs:
           - java-version: 21
             scala-version: 3.3.3
           - java-version: 21
-            scala-version: 3.4.2
+            scala-version: 3.4.3
+          - java-version: 21
+            scala-version: 3.5.0
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -51,7 +53,7 @@ jobs:
       fail-fast: false
       matrix:
         java-version: [ 8, 17 ]
-        scala-version: [ 2.12, 2.13, 3.3, 3.4.2 ]
+        scala-version: [ 2.12, 2.13, 3.3, 3.4.3, 3.5.0 ]
         include:
           # Including lowest/highest versions that work with Java 21
           - java-version: 21
@@ -67,7 +69,9 @@ jobs:
           - java-version: 21
             scala-version: 3.3.3
           - java-version: 21
-            scala-version: 3.4.2
+            scala-version: 3.4.3
+          - java-version: 21
+            scala-version: 3.5.0
 
     runs-on: ubuntu-latest
     steps:
@@ -99,7 +103,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        scala-version: [ 2.12.19, 2.13.14, 3.3.3, 3.4.2 ]
+        scala-version: [ 2.12.19, 2.13.14, 3.3.3, 3.4.3, 3.5.0 ]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
diff --git a/build.sc b/build.sc
index 00ca44cce..a5bac90ba 100644
--- a/build.sc
+++ b/build.sc
@@ -57,15 +57,17 @@ val scala2_13Versions = 2.to(14)
   .map(v => s"2.13.${v}")
 val scala33Versions = Seq("3.3.0", "3.3.1", "3.3.2", "3.3.3")
 //  .dropWhile(v => isJava21 && v == "3.3.0")
-val scala34Versions = Seq("3.4.2")
+// TODO: We can't have 3.4.0 & 3.4.1 until we solve https://github.com/com-lihaoyi/Ammonite/issues/1395
+val scala34Versions = Seq("3.4.2", "3.4.3")
+val scala35Versions = Seq("3.5.0")
 
 val scala2Versions = scala2_12Versions ++ scala2_13Versions
-val scala3Versions = scala33Versions ++ scala34Versions
+val scala3Versions = scala33Versions ++ scala34Versions ++ scala35Versions
 
 val binCrossScalaVersions =
   Seq(scala2_12Versions.last, scala2_13Versions.last, scala33Versions.last)
 val assemblyCrossScalaVersions =
-  Seq(scala2_12Versions.last, scala2_13Versions.last, scala33Versions.last, scala34Versions.last)
+  Seq(scala2_12Versions.last, scala2_13Versions.last, scala33Versions.last, scala34Versions.last, scala35Versions.last)
 def isScala2_12_10OrLater(sv: String): Boolean = {
   (sv.startsWith("2.12.") && sv.stripPrefix("2.12.").length > 1) || sv.startsWith("2.13.")
 }
@@ -223,8 +225,8 @@ trait AmmInternalModule extends CrossSbtModule with Bloop.Module {
         Seq(PathRef(millSourcePath / "src" / "main" / "scala-2.13-or-3"))
       else Nil
     val extraDir5 =
-      if (sv.startsWith("3.4"))
-        if (sv.stripPrefix("3.4.").toInt < 2)
+      if (sv.startsWith("3.4") || (sv.startsWith("3.5")))
+        if (sv.startsWith("3.4.0") || sv.startsWith("3.4.1"))
           sys.error("Scala 3.4.0 and 3.4.1 are incompatible with Ammonite")
         else
           Seq(PathRef(millSourcePath / "src" / "main" / "scala-3.4.2+"))