diff --git a/infra/base-images/base-builder/Dockerfile b/infra/base-images/base-builder/Dockerfile
index 475e5a7d1134..1f6018e06238 100644
--- a/infra/base-images/base-builder/Dockerfile
+++ b/infra/base-images/base-builder/Dockerfile
@@ -25,6 +25,7 @@ RUN dpkg --add-architecture i386 && \
         binutils-dev \
         build-essential \
         curl \
+        wget \
         git \
         jq \
         libc6-dev-i386 \
@@ -122,10 +123,11 @@ ENV FUZZER_LDFLAGS ""
 
 WORKDIR $SRC
 
-# TODO: switch to -b stable once we can.
 RUN git clone https://github.com/AFLplusplus/AFLplusplus.git aflplusplus && \
     cd aflplusplus && \
-    git checkout 5525f8c9ef8bb879dadd0eb942d524827d1b0362
+    git checkout ef77d552e9b89852b293c300a5a9a9c617945f43 && \
+    wget --no-check-certificate -O oss.sh https://raw.githubusercontent.com/vanhauser-thc/binary_blobs/master/oss.sh && \
+    chmod 755 oss.sh
 
 RUN cd $SRC && \
     curl -L -O https://github.com/google/honggfuzz/archive/oss-fuzz.tar.gz && \
diff --git a/infra/base-images/base-builder/compile_afl b/infra/base-images/base-builder/compile_afl
index a9e5ae250b5f..9275fd114a27 100644
--- a/infra/base-images/base-builder/compile_afl
+++ b/infra/base-images/base-builder/compile_afl
@@ -59,7 +59,7 @@ env | egrep -q '^AFL_SKIP_OSSFUZZ=' || {
     export AFL_LLVM_INSTRUMENT=CLASSIC,CTX-2
     export AFL_ENABLE_CMPLOG=0
     # we increase the chance for LAF because we do not do CMPLOG with CTX
-    export AFL_LAF_CHANCE=30
+    export AFL_LAF_CHANCE=20
   }
 
   # 40% chance to create a dictionary.