diff --git a/ci/vars.yml b/ci/vars.yml
index 417db9e7..37f91d5d 100644
--- a/ci/vars.yml
+++ b/ci/vars.yml
@@ -7,10 +7,10 @@
 # end up as float otherwise).
 variables:
   VERILATOR_VERSION: "4.104"
-  IBEX_COSIM_VERSION: "0.3"
+  IBEX_COSIM_VERSION: "0.4"
   RISCV_TOOLCHAIN_TAR_VERSION: "20220210-1"
   RISCV_TOOLCHAIN_TAR_VARIANT: "lowrisc-toolchain-gcc-rv32imcb"
   RISCV_COMPLIANCE_GIT_VERSION: "844c6660ef3f0d9b96957991109dfd80cc4938e2"
   VERIBLE_VERSION: "v0.0-2135-gb534c1fe"
   # lowRISC-internal version numbers of Ibex-specific Spike builds.
-  SPIKE_IBEX_VERSION: "20220516-git-9af9730baf7b956c3072c1b436d867aca5ef8f4c"
+  SPIKE_IBEX_VERSION: "20220810-git-72b1fd86d42a114e8ec4273f1d8222390334b5f2"