diff --git a/BUGS.md b/BUGS.md
index 9673b14..ee3b2e7 100644
--- a/BUGS.md
+++ b/BUGS.md
@@ -1,10 +1,12 @@
 
 # BUGS
 
+- internal server error ao fazer logout no macos python3.8
 - GET can get filtered by browser cache
 - topicos chapter devem ser automaticamente completos assim que as dependencias são satisfeitas. Nao devia ser necessario (ou possivel?) clicar neles.
 - topicos do tipo learn deviam por defeito nao ser randomizados e assumir ficheiros `learn.yaml`.
 - internal server error 500... experimentar cenario: aluno tem login efectuado, prof muda pw  e faz login/logout. aluno obtem erro 500.
+- radio sem options rebenta com aprendizations --check
 - chapters deviam ser mostrados unlocked, antes de mostrar a medalha. alunos pensam que já terminaram e não conseguem progredir por causa das dependencias.
 - if topic deps on invalid ref terminates server with "Unknown error".
 - warning nos topics que não são usados em nenhum curso
diff --git a/aprendizations/templates/rankings.html b/aprendizations/templates/rankings.html
index e1bb306..3eb61b3 100644
--- a/aprendizations/templates/rankings.html
+++ b/aprendizations/templates/rankings.html
@@ -83,7 +83,6 @@
             {{ ' '.join(r[1].split()[n] for n in (0,-1)) }}
              
             {{ '<i class="far fa-thumbs-up text-success" title="Mais de 75% de respostas correctas"></i>' if r[3] > 0.75 else '' }}
-            {{ '<i class="fas fa-bug" title="Menos de 50% de respostas correctas" ></i>' if 0.0 < r[3] < 0.5 else '' }}
           </td>
           <td> <!-- progress -->
             <div class="progress">
diff --git a/package-lock.json b/package-lock.json
index faff395..30535bd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3,19 +3,19 @@
     "lockfileVersion": 1,
     "dependencies": {
         "@fortawesome/fontawesome-free": {
-            "version": "5.15.1",
-            "resolved": "https://registry.npmjs.org/@fortawesome/fontawesome-free/-/fontawesome-free-5.15.1.tgz",
-            "integrity": "sha512-OEdH7SyC1suTdhBGW91/zBfR6qaIhThbcN8PUXtXilY4GYnSBbVqOntdHbC1vXwsDnX0Qix2m2+DSU1J51ybOQ=="
+            "version": "5.15.2",
+            "resolved": "https://registry.npmjs.org/@fortawesome/fontawesome-free/-/fontawesome-free-5.15.2.tgz",
+            "integrity": "sha512-7l/AX41m609L/EXI9EKH3Vs3v0iA8tKlIOGtw+kgcoanI7p+e4I4GYLqW3UXWiTnjSFymKSmTTPKYrivzbxxqA=="
         },
         "codemirror": {
-            "version": "5.58.2",
-            "resolved": "https://registry.npmjs.org/codemirror/-/codemirror-5.58.2.tgz",
-            "integrity": "sha512-K/hOh24cCwRutd1Mk3uLtjWzNISOkm4fvXiMO7LucCrqbh6aJDdtqUziim3MZUI6wOY0rvY1SlL1Ork01uMy6w=="
+            "version": "5.59.1",
+            "resolved": "https://registry.npmjs.org/codemirror/-/codemirror-5.59.1.tgz",
+            "integrity": "sha512-d0SSW/PCCD4LoSCBPdnP0BzmZB1v3emomCUtVlIWgZHJ06yVeBOvBtOH7vYz707pfAvEeWbO9aP6akh8vl1V3w=="
         },
         "mdbootstrap": {
-            "version": "4.19.1",
-            "resolved": "https://registry.npmjs.org/mdbootstrap/-/mdbootstrap-4.19.1.tgz",
-            "integrity": "sha512-vzYd7UQ0H1tyJfDqCYwsAv+sxol/xRkJP/5FMhcdW3ZbN9xUnmWiSPHx3A6ddGxdOQbfJTWxT3G8M+I++Qdk6w=="
+            "version": "4.19.2",
+            "resolved": "https://registry.npmjs.org/mdbootstrap/-/mdbootstrap-4.19.2.tgz",
+            "integrity": "sha512-a+LwPflYRYwlmYKTvftW0X7SfOMrRZ02qZjrssNko1lPU/HR5JRFc1uwa3Dmmw+6TwsYH760waqdghBFrucpOw=="
         }
     }
 }
diff --git a/package.json b/package.json
index 64a1163..584dc59 100644
--- a/package.json
+++ b/package.json
@@ -2,9 +2,9 @@
     "description": "Javascript libraries required to run the server",
     "email": "mjsb@uevora.pt",
     "dependencies": {
-        "@fortawesome/fontawesome-free": "^5.15.1",
-        "codemirror": "^5.58.2",
-        "mdbootstrap": "^4.19.1"
+        "@fortawesome/fontawesome-free": "^5.15.2",
+        "codemirror": "^5.59.1",
+        "mdbootstrap": "^4.19.2"
     },
     "private": true
 }
--
libgit2 0.21.2