diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d7da3f96c..32d2b6434 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -38,7 +38,7 @@ jobs:
 
     # We compile the tests here so the test command can run faster
     - name: Compile tests
-      run: "sbt test:compile"
+      run: "sbt Test/compile"
     # Due to transient errors thrown by HTMLUnit, we try
     # to run the tests a few times
     - name: Run tests
diff --git a/build.sbt b/build.sbt
index daab1b3c2..b546adcfe 100644
--- a/build.sbt
+++ b/build.sbt
@@ -50,6 +50,8 @@ scalacOptions ++= Seq(
   "-Xlint:eta-zero",
   "-Xlint:eta-sam",
   "-Xlint:deprecation",
+  // Sets warnings as errors on the CI
+  if (insideCI.value) "-Wconf:any:error" else "-Wconf:any:warning",
   "-Wdead-code",
   "-Wextra-implicit",
   "-Wmacros:before",
diff --git a/test/models/AuthorizationSpec.scala b/test/models/AuthorizationSpec.scala
index 39ce8d7a7..5c08fe5db 100644
--- a/test/models/AuthorizationSpec.scala
+++ b/test/models/AuthorizationSpec.scala
@@ -40,7 +40,7 @@ class AuthorizationSpec extends Specification {
           val userId = randomUUID()
           val rights = UserRights(Set(Helper))
           val fileExpirationDate = 10
-          val overrun = -3
+          val overrun: Long = -3
 
           val answers = List.empty[Answer]
 
@@ -70,7 +70,7 @@ class AuthorizationSpec extends Specification {
           val userId = randomUUID()
           val rights = UserRights(Set(Helper))
           val fileExpirationDate = 10
-          val overrun = 10
+          val overrun: Long = 10
 
           val answers = List.empty[Answer]
 
@@ -132,7 +132,7 @@ class AuthorizationSpec extends Specification {
           val userId = randomUUID()
           val rights = UserRights(Set(Helper))
           val fileExpirationDate = 10
-          val overrun = -3
+          val overrun: Long = -3
 
           val answer = createAnswer(applicationId, now().minusDays(fileExpirationDate + overrun))
 
@@ -165,7 +165,7 @@ class AuthorizationSpec extends Specification {
           val userId = randomUUID()
           val rights = UserRights(Set(Helper))
           val fileExpirationDate = 10
-          val overrun = 2
+          val overrun: Long = 2
 
           val answer = createAnswer(applicationId, now().minusDays(fileExpirationDate + overrun))
 
@@ -205,7 +205,7 @@ class AuthorizationSpec extends Specification {
           val userId = randomUUID()
           val rights = UserRights(Set(InstructorOfGroups(Set.empty[UUID])))
           val fileExpirationDate = 10
-          val overrun = -3
+          val overrun: Long = -3
 
           val answers = List.empty[Answer]
 
@@ -235,7 +235,7 @@ class AuthorizationSpec extends Specification {
           val userId = randomUUID()
           val rights = UserRights(Set(InstructorOfGroups(Set.empty[UUID])))
           val fileExpirationDate = 10
-          val overrun = 10
+          val overrun: Long = 10
 
           val answers = List.empty[Answer]
 
@@ -297,7 +297,7 @@ class AuthorizationSpec extends Specification {
           val userId = randomUUID()
           val rights = UserRights(Set(InstructorOfGroups(Set.empty[UUID])))
           val fileExpirationDate = 10
-          val overrun = -3
+          val overrun: Long = -3
 
           val answer = createAnswer(applicationId, now().minusDays(fileExpirationDate + overrun))
 
@@ -330,7 +330,7 @@ class AuthorizationSpec extends Specification {
           val userId = randomUUID()
           val rights = UserRights(Set(InstructorOfGroups(Set.empty[UUID])))
           val fileExpirationDate = 10
-          val overrun = 2
+          val overrun: Long = 2
 
           val answer = createAnswer(applicationId, now().minusDays(fileExpirationDate + overrun))